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[Music]

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I do love that welcome back to devoops

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next up we have sanin who is a former

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Computing teacher and an avid fan of

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python since 2014 he has a back in

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developing programming courses and small

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educational applications for use in

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schools as one of the creators of the

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Victorian coding challenge sun has been

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building and maintaining a coding

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competition platform that that has

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hosted quiz style events Capture the

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Flag challenges and in 2014 agent-based

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challenges where students sorry 2024

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reading agent based challenges where

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students program agents to compete in

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challenges based on Game Theory please

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welcome sanun

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hello

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um is this mic working yes I think so

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works really well so let me tell you a

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little bit about the Victorian coding

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challenge so this is a competition for

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essentially students that find Computing

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in school a little bit too easy um it is

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funded by the Victorian Department of

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Education through the mathematical

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Association of Victoria and over the

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last five years we've had over 7,000

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students participate it takes place over

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two stages stage one is an open-ended

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problem set stage two is the competition

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which is the interesting part which I'll

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be talking about so just a quick show of

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hands um put your hand up if you found

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Computing in school some combination of

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too easy or

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boring all right you guys would have

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been the audience you would have been

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the students participating um so here's

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the team that makes it all happen danela

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who works for the mathematics

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Association of Victoria essentially

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managed to get the funding deals with

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the Department of Education deals with

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the schools a million emails Nathan and

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I essentially make the problems in the

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platform over time I've become more of

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the platform person Nathan's become more

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of a problems person and uh along with

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us there's been probably about another

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seven eight different volunteers some of

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whom I'm going to mention in the talk so

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a little bit about the background of the

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the challenge so the first part is like

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an open-ended problem set we're

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currently up to like 30 plus problems

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and the goal here is just to do

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something that's a little bit more fun

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and more challenging than school is

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normally so two examples of problems one

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is um it was a it was called I always

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win the game of nim that is a Cod game

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if you do a binary representation of the

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game state for that game you could

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basically win 100% at a time so this was

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a fun thing that the students built

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basically like a card Hustler that they

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showed to all their friends a computer

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that would win 100% of the time in a

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seemingly fair game another challenge

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again this is something that kids would

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never come across was like this time cap

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capsule problem where they get given a

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time capsule that'll like reveal on a

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certain date and they can either hack it

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in various ways you could break the

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cryptography you could study the API

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code and find a way to like encode the

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data in a tricky way where you

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manipulate the time stamp so that it

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opens early so these are the type of

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problems that we put in front of kids um

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however when the competition started it

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was covid time and this was all pitched

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as a live event and we couldn't do a

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live event so basically we had to do um

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like a remote thing so in 2020 we did a

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combination of recommendation engines

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and um we gave students the Wikipedia

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API and from the get-go we when we got

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the the the actual submissions by

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students there were about 40 for each

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year band we basically Blown Away by the

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quality students we had a team build

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their own machine learning model that

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was making quizzes I mean we didn't even

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know how to mark this stuff was it on

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the basis of like the most interesting

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and the most creative or the most

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advanced code so yeah that was uh it was

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a really really interesting time going

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through all those

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2021 2021 was much the same except worse

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from our perspective we had a theme of

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games the 78s made text-based games

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which went really well n910 this is my

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total mess up um we chose to use a 3D

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game engine in Python that had too high

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system requirements given that I was the

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one testing it on my computer laptop I

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yeah somehow even the school gave me a

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very nice laptop and my students a very

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nice laptop it never really really

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occurred to me that the requirements

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were too high we ended up only having

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five submissions for 910 so this is the

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third year of the project so we had a

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three-year Grant and the department

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essentially is telling us

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hey this year you get to do the live

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event we're going to pull the students

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and the teachers make sure you give us

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feedback and based on that feedback

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we're going to decide whether we're

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going to renew your um your Grant

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so really we were in need of a spectacle

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here and here I have another question

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for the audience uh show hands if you

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know what a CTF

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is okay leave your hand up maybe if

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you've participated in

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one okay maybe I'll do a little bit of

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explaining so in this particular class

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um so I was a teacher that year I was

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teaching at the King David school we

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were um learning networking and that

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year the theme of the class was uh CTF

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so we we

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essentially the challenges from

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something called

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picoctf and I basically took part in

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creating problems and little puzzles for

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students that they would solve by sshing

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into my computer on our local network if

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you see there's like a switch in the

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middle everybody would come in with a

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school issued old teacher computer that

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had Ubuntu on it or um a Raspberry Pi

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and the students themselves came up with

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this scoreboard this live interactive

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scoreboard where where they took those

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problems and they scored themselves and

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they had like live rankings and this was

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done by by the way like halfway through

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the semester so we spent like I don't

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know 10 15 lessons every year students

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every class students rushing in and then

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like doing problems and having these

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rankings on a scoreboard so for me I've

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never seen more enthusiasm in a

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classroom in my entire life and this was

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the idea that I wanted to port to the

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Victorian coding challenge the first

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thing that I did was um rewrote the

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scoreboard program um the initial thing

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that you know when you have very

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enthusiastic year NS that have a lot of

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talent but not a lot of experience it

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was like one function with 20 parameters

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and God knows how many globals I turned

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it into something really simple one

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worrying thing because I wanted to keep

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it keep the coding basic so all my

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students could understand it was that

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Json file like there was no database

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there was just a whole game state was

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one Json file and I was like thinking

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that's a ticking time bomb that never

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somehow went off um so yeah we used this

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for at least like at least 10 lessons

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and it worked perfectly so if it ain't

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broke don't fix it this is more or less

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the program I was going to take to the

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Victorian coding challenge in terms of

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the challenges really there were only

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three types um one was um they would

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download a file and they need to solve

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something maybe it was like a a um like

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a password protected Word file that they

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needed to find a tool to crack maybe it

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was something coded or encrypted data it

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could have been like a zip file with

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like a f Bolder jungle where something

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was hidden that they had to find uh

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another type

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was that they would SSH into a python

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script so you create a user on Linux and

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then like you create a rule in sshd

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config and then they SSH into like a

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puzzle you created they don't see the

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source code they're just like inside

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your your sort of text Loop and the last

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one was a little bit more elaborate um

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have you show hands if you know what a

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truth jail

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is so like you create essentially like a

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not really a virtual environment but

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like a folder with all of the necessary

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tools and libraries to have a very

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restricted like Linux system and in

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there they perform a task so those were

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the three types of uh challenges in

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terms of how this was deployed now this

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is terrible I mean people talk about

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like being embarrassed by past code like

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wait for this so three python files that

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do the admin easy so each challenge was

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actually the users didn't have accounts

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each challenge was a user

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so they would SSH into that user you

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could have multiple SSH sessions for the

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same user from different IPS Linux is

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flexible like that they would go in and

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try to get a flag then there would be

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another user called a scoreboard they

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would SSH into that to submit their flag

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along with their password and they would

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get their scores updated so that's how

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it worked and with nine students in my

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class it never broke now I did take a

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look at other projects that did similar

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stuff and they were about at least

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magnitude more complicated and I was

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wondering like this is so easy I don't

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know what why why do people make it

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complicated so um in terms of the user

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interface was very basic Google site you

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can host files there you get the

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instructions to the

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SSH and then like the challenge went for

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three hours every hour we released new

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problems and new challenges so this is

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the competition day um and let's see how

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we're

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going so in the morning there's

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something called relays like unplugged

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problems

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the kids smashed that everybody had a

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good time at 11:00 I'm standing in front

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of a crowd about three times the size

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going we're going to do a a systems

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check everybody has a flag it's there

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it's on paper you're just going to type

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in this into your terminal submit and

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we're all going to be good turns

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out works for about two-thirds of the

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teams and then all of a sudden a bunch

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of people can't submit it and I have no

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idea why luckily this is deployed in in

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a in a Leno server that takes less than

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90 seconds to restart and so restarting

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it fixes the problem and that was my day

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like this is a student there looking at

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me I'm probably restarting the Leno

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server right there and everything

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somehow just rolls over the line um

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until about 10 minutes to go where I

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mentioned sheru jails they are

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escapable um the score of the top team

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which was winning by a country mile I

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mean like they probably risked this

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qualification but I was really impressed

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just went up by 3 Zer and then it went

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down back to normal so yeah I I really

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00:10:35,920 --> 00:10:40,399
when this all ended I was almost shaking

277
00:10:38,240 --> 00:10:44,040
I really didn't even know how we went

278
00:10:40,399 --> 00:10:46,680
but was the funding lost no we were good

279
00:10:44,040 --> 00:10:48,839
so despite all these technical

280
00:10:46,680 --> 00:10:50,399
issues every team submitted everything

281
00:10:48,839 --> 00:10:52,959
they found in terms of the flags the

282
00:10:50,399 --> 00:10:54,680
feedback from students was amazing and

283
00:10:52,959 --> 00:10:57,560
the teachers did mention some technical

284
00:10:54,680 --> 00:10:59,800
glitches but they were happy to and like

285
00:10:57,560 --> 00:11:03,480
not only did we get our funding renewed

286
00:10:59,800 --> 00:11:06,839
like we actually got way more funding so

287
00:11:03,480 --> 00:11:09,519
this whole thing ended up being thank

288
00:11:06,839 --> 00:11:13,440
you ended up being a big

289
00:11:09,519 --> 00:11:15,360
success um the tech postmortem now this

290
00:11:13,440 --> 00:11:16,600
is the if it ain't broke don't fix it n

291
00:11:15,360 --> 00:11:20,160
student

292
00:11:16,600 --> 00:11:21,560
thing if you open up the sshd config of

293
00:11:20,160 --> 00:11:23,399
any Linux system you're gonna you're

294
00:11:21,560 --> 00:11:25,560
going to find commented out the default

295
00:11:23,399 --> 00:11:28,480
settings and I only would have needed to

296
00:11:25,560 --> 00:11:30,240
change that Max sessions from 10 to

297
00:11:28,480 --> 00:11:31,920
something like 30

298
00:11:30,240 --> 00:11:33,399
that wouldn't have fully fixed it

299
00:11:31,920 --> 00:11:35,279
because there was another problem where

300
00:11:33,399 --> 00:11:38,320
students used like these terminals that

301
00:11:35,279 --> 00:11:41,720
were in the browser and if you close the

302
00:11:38,320 --> 00:11:44,839
browser you don't close the session

303
00:11:41,720 --> 00:11:46,440
so that was a major issue another thing

304
00:11:44,839 --> 00:11:48,279
that could have been a potential issue

305
00:11:46,440 --> 00:11:50,760
was there was a challenge that was

306
00:11:48,279 --> 00:11:53,360
around cracking a hash but they had to

307
00:11:50,760 --> 00:11:55,639
enter a password into an SSH and and and

308
00:11:53,360 --> 00:11:58,680
a team try to brute force that so I

309
00:11:55,639 --> 00:12:00,000
don't know if this Mac startups thing um

310
00:11:58,680 --> 00:12:02,240
that sort of limits the amount of

311
00:12:00,000 --> 00:12:06,200
waiting connections to 10 and then drops

312
00:12:02,240 --> 00:12:07,760
30% after 10 kicked in or not but yeah

313
00:12:06,200 --> 00:12:09,279
the part that keeps blowing my mind

314
00:12:07,760 --> 00:12:11,880
again and again and again is that not

315
00:12:09,279 --> 00:12:14,560
having a database wasn't the issue that

316
00:12:11,880 --> 00:12:16,040
single Json file that was edited just

317
00:12:14,560 --> 00:12:18,199
somehow

318
00:12:16,040 --> 00:12:19,680
worked uh yeah the mega score kid I had

319
00:12:18,199 --> 00:12:21,680
a really good conversation with him he

320
00:12:19,680 --> 00:12:24,399
he actually learned that on the

321
00:12:21,680 --> 00:12:26,360
spot like nobody finished except that

322
00:12:24,399 --> 00:12:28,920
one team and he had enough time to read

323
00:12:26,360 --> 00:12:32,199
a Blog about escaping sh jails and apply

324
00:12:28,920 --> 00:12:35,360
all that so that was

325
00:12:32,199 --> 00:12:39,320
impressive um Lessons

326
00:12:35,360 --> 00:12:43,160
Learned um if it ain't broke try your

327
00:12:39,320 --> 00:12:44,839
best to break it like that's just I I

328
00:12:43,160 --> 00:12:47,360
had that attitude of

329
00:12:44,839 --> 00:12:48,959
like this works in all the circumstances

330
00:12:47,360 --> 00:12:51,240
I tried it but you can actually quite

331
00:12:48,959 --> 00:12:54,639
easily simulate more terrible

332
00:12:51,240 --> 00:12:56,800
circumstances um for me personally the

333
00:12:54,639 --> 00:12:58,480
mix of technical failure and the student

334
00:12:56,800 --> 00:13:00,519
enthusiasm like I've never been more

335
00:12:58,480 --> 00:13:02,959
motivated than at the end of this to try

336
00:13:00,519 --> 00:13:05,320
to work and try to make this a much

337
00:13:02,959 --> 00:13:08,000
better platform so that was the perfect

338
00:13:05,320 --> 00:13:11,160
thing and yeah in a space of two weeks I

339
00:13:08,000 --> 00:13:12,560
had two babies a human one my daughter

340
00:13:11,160 --> 00:13:14,839
was born about a week before the

341
00:13:12,560 --> 00:13:17,160
challenge and then after all this

342
00:13:14,839 --> 00:13:20,800
happened I the project became something

343
00:13:17,160 --> 00:13:23,000
I started to take you know very very

344
00:13:20,800 --> 00:13:26,639
personally and seriously so where to

345
00:13:23,000 --> 00:13:29,120
next um more founding allowed me to step

346
00:13:26,639 --> 00:13:31,440
away from Mostly making problems and

347
00:13:29,120 --> 00:13:33,440
worrying about the

348
00:13:31,440 --> 00:13:35,279
platform now the first thing funnily

349
00:13:33,440 --> 00:13:37,480
enough the first thing I did after this

350
00:13:35,279 --> 00:13:38,800
broke is I probably I spent all of my

351
00:13:37,480 --> 00:13:41,240
free time in the next two months

352
00:13:38,800 --> 00:13:43,639
rebuilding the CTF platform which never

353
00:13:41,240 --> 00:13:44,959
got reused because we ended up deciding

354
00:13:43,639 --> 00:13:47,120
that we're going to step away from the

355
00:13:44,959 --> 00:13:48,560
CTF thing and we're going to try to

356
00:13:47,120 --> 00:13:50,680
build a platform that was more like

357
00:13:48,560 --> 00:13:53,360
Google quizzes so where they we could

358
00:13:50,680 --> 00:13:55,040
ask different types of questions except

359
00:13:53,360 --> 00:13:56,600
that it would incorporate a live

360
00:13:55,040 --> 00:13:59,399
scoreboard because the live scoreboard

361
00:13:56,600 --> 00:14:04,040
was the pretty big deal there

362
00:13:59,399 --> 00:14:06,639
so yeah that was my job to build it and

363
00:14:04,040 --> 00:14:10,839
this is the tool set that I chose based

364
00:14:06,639 --> 00:14:13,320
on the situation based on like a mixture

365
00:14:10,839 --> 00:14:16,880
of what looked interesting to me and

366
00:14:13,320 --> 00:14:19,519
what looked not intimidating to me so I

367
00:14:16,880 --> 00:14:21,680
did teach you know normal CSS uh

368
00:14:19,519 --> 00:14:24,800
JavaScript HTML so it was just vanilla

369
00:14:21,680 --> 00:14:26,120
js on the front end initially SQ light

370
00:14:24,800 --> 00:14:27,440
given that it worked seamlessly with

371
00:14:26,120 --> 00:14:31,560
python was going to be the choice for

372
00:14:27,440 --> 00:14:33,759
the DB fast API now I had some

373
00:14:31,560 --> 00:14:36,639
familiarity with both Jango and flask

374
00:14:33,759 --> 00:14:39,440
before fast API but that fast API seemed

375
00:14:36,639 --> 00:14:41,360
like it just seemed easy and obvious

376
00:14:39,440 --> 00:14:43,040
from the moment I first looked at the

377
00:14:41,360 --> 00:14:46,519
documentation so that was going to be my

378
00:14:43,040 --> 00:14:48,880
back end and uh yeah I was going to do

379
00:14:46,519 --> 00:14:51,360
the serus developer thing with GitHub

380
00:14:48,880 --> 00:14:54,360
you know automated deployment automated

381
00:14:51,360 --> 00:14:57,519
testing for every commit and so on and

382
00:14:54,360 --> 00:15:00,399
going to use uh AWS for the first time

383
00:14:57,519 --> 00:15:03,160
now I only use more or less

384
00:15:00,399 --> 00:15:04,880
these apps but I get built for other

385
00:15:03,160 --> 00:15:08,040
apps I don't know if other people have

386
00:15:04,880 --> 00:15:08,800
similar issues with AWS but like it's

387
00:15:08,040 --> 00:15:11,279
really

388
00:15:08,800 --> 00:15:13,279
annoying

389
00:15:11,279 --> 00:15:15,639
um

390
00:15:13,279 --> 00:15:18,040
so I don't have that much time for

391
00:15:15,639 --> 00:15:20,240
technical detail but this is more or

392
00:15:18,040 --> 00:15:24,240
less how I ended up slowly building a

393
00:15:20,240 --> 00:15:28,560
more robust platform so by April uh in

394
00:15:24,240 --> 00:15:30,399
2023 I had a prototype that just worked

395
00:15:28,560 --> 00:15:32,399
it it all the features that we needed

396
00:15:30,399 --> 00:15:33,360
students could ow short answer questions

397
00:15:32,399 --> 00:15:35,160
multiple

398
00:15:33,360 --> 00:15:37,680
choice

399
00:15:35,160 --> 00:15:38,839
um like I used all of the libraries I

400
00:15:37,680 --> 00:15:42,079
wanted and it was deploying

401
00:15:38,839 --> 00:15:46,079
automatically so that was pretty good um

402
00:15:42,079 --> 00:15:47,920
by September I had added an admin page

403
00:15:46,079 --> 00:15:50,519
which made it easy for us to populate

404
00:15:47,920 --> 00:15:52,600
questions there's also a Junior Day for

405
00:15:50,519 --> 00:15:54,240
years 56 that I was very little involved

406
00:15:52,600 --> 00:15:56,079
in but I made it easy for those guys to

407
00:15:54,240 --> 00:15:59,560
just create questions and put them on

408
00:15:56,079 --> 00:16:02,560
the site and by October with about a

409
00:15:59,560 --> 00:16:04,759
couple weeks to go I had gone to town

410
00:16:02,560 --> 00:16:06,240
with testing I used something called um

411
00:16:04,759 --> 00:16:08,639
show hands if you've heard of locust I

412
00:16:06,240 --> 00:16:12,079
have no idea if this is popular it does

413
00:16:08,639 --> 00:16:13,839
stress testing um basically there was

414
00:16:12,079 --> 00:16:16,920
local testing there was stress testing

415
00:16:13,839 --> 00:16:18,440
and I found every excuse I could to get

416
00:16:16,920 --> 00:16:21,160
every circle of friends every

417
00:16:18,440 --> 00:16:22,600
professional group to try to use the

418
00:16:21,160 --> 00:16:25,120
platform in some other version I

419
00:16:22,600 --> 00:16:27,079
addressed it up as AI trivia look AI is

420
00:16:25,120 --> 00:16:28,440
making these Json files which are trivia

421
00:16:27,079 --> 00:16:29,639
which was just an excuse at that's my

422
00:16:28,440 --> 00:16:32,079
platform

423
00:16:29,639 --> 00:16:34,440
so basically after about three four

424
00:16:32,079 --> 00:16:36,639
successes like I decided to let it go

425
00:16:34,440 --> 00:16:38,120
there were a couple of weeks left this

426
00:16:36,639 --> 00:16:41,000
is Locus by the way that was a

427
00:16:38,120 --> 00:16:43,240
screenshot in the WhatsApp group I was

428
00:16:41,000 --> 00:16:45,160
running about 142 requests per second I

429
00:16:43,240 --> 00:16:48,399
expect the competition only needed about

430
00:16:45,160 --> 00:16:50,800
five so I was like safe in that regard

431
00:16:48,399 --> 00:16:52,360
this is what the competition looked like

432
00:16:50,800 --> 00:16:54,519
these are groups of questions this is

433
00:16:52,360 --> 00:16:56,759
actually a primary question and this is

434
00:16:54,519 --> 00:16:58,360
going to be either like multiple choice

435
00:16:56,759 --> 00:17:00,319
or a short answer they have three

436
00:16:58,360 --> 00:17:01,519
attempts to the short answer there's

437
00:17:00,319 --> 00:17:02,959
going to be scoreboards you're going to

438
00:17:01,519 --> 00:17:07,240
see them on the

439
00:17:02,959 --> 00:17:09,439
pictures um and so yeah a couple of

440
00:17:07,240 --> 00:17:12,240
weeks to go and I have an idea that I've

441
00:17:09,439 --> 00:17:14,760
been thinking about a long long time and

442
00:17:12,240 --> 00:17:17,400
it is the idea for like an agent

443
00:17:14,760 --> 00:17:19,839
competition and the idea here is like

444
00:17:17,400 --> 00:17:21,839
imagine some simple game and the

445
00:17:19,839 --> 00:17:23,600
students would program an agent to play

446
00:17:21,839 --> 00:17:25,079
that game and the Agents would complete

447
00:17:23,600 --> 00:17:26,600
against other agents and then they would

448
00:17:25,079 --> 00:17:29,880
get some feedback and then they would

449
00:17:26,600 --> 00:17:32,600
try to like adjust strategy

450
00:17:29,880 --> 00:17:34,679
so you know this is this is bit of a

451
00:17:32,600 --> 00:17:35,960
technical challenge but I thought that

452
00:17:34,679 --> 00:17:38,000
in the two weeks I could do like a

453
00:17:35,960 --> 00:17:39,039
10-minute preview and show it to the

454
00:17:38,000 --> 00:17:40,720
students like this is what we're going

455
00:17:39,039 --> 00:17:45,039
to do next

456
00:17:40,720 --> 00:17:45,039
year so

457
00:17:45,280 --> 00:17:48,440
yeah like I said I only wanted a

458
00:17:47,360 --> 00:17:52,440
10-minute

459
00:17:48,440 --> 00:17:56,320
demo I mean again student code running

460
00:17:52,440 --> 00:17:58,960
on my server this is a bit of a

461
00:17:56,320 --> 00:18:01,720
challenge but here's what happened in

462
00:17:58,960 --> 00:18:03,039
one day messing around with Chad GPT I

463
00:18:01,720 --> 00:18:05,880
had a proof of

464
00:18:03,039 --> 00:18:07,679
concept and all of the sort of big

465
00:18:05,880 --> 00:18:09,360
challenges I thought I had which was

466
00:18:07,679 --> 00:18:12,240
like making sure that the student code

467
00:18:09,360 --> 00:18:14,400
is properly formatted and you know I

468
00:18:12,240 --> 00:18:17,159
don't have random silly indentation

469
00:18:14,400 --> 00:18:19,640
errors and and and syntax errors was

470
00:18:17,159 --> 00:18:22,440
sorted by something called uh inspect

471
00:18:19,640 --> 00:18:25,039
lib and it was converted to like a

472
00:18:22,440 --> 00:18:28,080
playable game object uh using something

473
00:18:25,039 --> 00:18:30,280
called import lip. util and So within

474
00:18:28,080 --> 00:18:31,840
one day I started thinking well maybe I

475
00:18:30,280 --> 00:18:33,440
could do a little bit more than a

476
00:18:31,840 --> 00:18:35,200
10-minute preview I mean I know it's

477
00:18:33,440 --> 00:18:36,799
really risky but we're going to cage it

478
00:18:35,200 --> 00:18:39,720
in you

479
00:18:36,799 --> 00:18:42,240
know this is experimental might not work

480
00:18:39,720 --> 00:18:44,200
so we basically decided I somehow

481
00:18:42,240 --> 00:18:47,480
convinced everybody else that we should

482
00:18:44,200 --> 00:18:50,840
do a 45 minute mini game with the

483
00:18:47,480 --> 00:18:53,280
students and uh it'll be worth 5% not a

484
00:18:50,840 --> 00:18:55,360
lot of consequence and the student

485
00:18:53,280 --> 00:18:58,320
experience was really really easy so

486
00:18:55,360 --> 00:19:02,280
they played a game called greedy Pig and

487
00:18:58,320 --> 00:19:04,919
greedy pig is a bit like Blackjack in

488
00:19:02,280 --> 00:19:06,360
that there's a dice rolled you keep

489
00:19:04,919 --> 00:19:08,960
adding to your total unless the dice

490
00:19:06,360 --> 00:19:11,559
rolls one so it's about kind of like

491
00:19:08,960 --> 00:19:14,280
knowing when to stop and there is a

492
00:19:11,559 --> 00:19:15,600
statistically correct point to stop but

493
00:19:14,280 --> 00:19:16,919
if you have a game state where you know

494
00:19:15,600 --> 00:19:18,400
where the other players are doing you

495
00:19:16,919 --> 00:19:22,919
can do a much more sophisticated

496
00:19:18,400 --> 00:19:24,600
strategy so this is like they got a a um

497
00:19:22,919 --> 00:19:26,960
they got a reple on a website called

498
00:19:24,600 --> 00:19:29,400
replit they had a working player with a

499
00:19:26,960 --> 00:19:33,240
working strategy and all they had to do

500
00:19:29,400 --> 00:19:35,039
was tweak that in 45 minutes they had

501
00:19:33,240 --> 00:19:36,679
you know we had acted out a game in

502
00:19:35,039 --> 00:19:38,360
front of them with 10 minutes they they

503
00:19:36,679 --> 00:19:40,640
were told what the game was a week in

504
00:19:38,360 --> 00:19:43,440
advance and interestingly enough a lot

505
00:19:40,640 --> 00:19:45,280
of uh Primary students in Australia play

506
00:19:43,440 --> 00:19:48,480
this math gaming class

507
00:19:45,280 --> 00:19:50,440
so yeah like from the student point of

508
00:19:48,480 --> 00:19:52,520
view we knew we were good we knew that

509
00:19:50,440 --> 00:19:53,640
like they could understand it and play

510
00:19:52,520 --> 00:19:58,120
the

511
00:19:53,640 --> 00:20:00,080
game okay um so yeah like essentially

512
00:19:58,120 --> 00:20:01,919
from the student point of view a couple

513
00:20:00,080 --> 00:20:04,799
of if statements if they understand the

514
00:20:01,919 --> 00:20:08,080
game they could Implement a very good

515
00:20:04,799 --> 00:20:11,000
strategy so the live event in

516
00:20:08,080 --> 00:20:16,200
2023 going back to that live platform I

517
00:20:11,000 --> 00:20:18,159
built with fast API SQ light that all

518
00:20:16,200 --> 00:20:21,400
worked perfectly it was tested to the

519
00:20:18,159 --> 00:20:23,240
Max and the only bug we had was in the

520
00:20:21,400 --> 00:20:25,679
competition teams would log in with two

521
00:20:23,240 --> 00:20:27,520
lap stops to the same account and the

522
00:20:25,679 --> 00:20:29,559
scores were added up on the front end

523
00:20:27,520 --> 00:20:31,039
not the back end and so they all had

524
00:20:29,559 --> 00:20:33,240
wrong scores because they were logged in

525
00:20:31,039 --> 00:20:34,679
with two computers other than that

526
00:20:33,240 --> 00:20:36,679
having to tell them what the scores were

527
00:20:34,679 --> 00:20:38,799
we didn't really have any bugs so with

528
00:20:36,679 --> 00:20:41,520
an hour ago it was all smiles so now the

529
00:20:38,799 --> 00:20:44,799
78 day and the 910 day they're about a

530
00:20:41,520 --> 00:20:47,159
week AP pot so with the 78 day I set the

531
00:20:44,799 --> 00:20:49,000
expectations guys this agent games thing

532
00:20:47,159 --> 00:20:51,320
we're about to do is an experiment it'll

533
00:20:49,000 --> 00:20:53,760
probably not

534
00:20:51,320 --> 00:20:55,360
work but let's give it a try this is

535
00:20:53,760 --> 00:20:57,600
what we're going to do next year it's a

536
00:20:55,360 --> 00:21:00,880
really cool concept

537
00:20:57,600 --> 00:21:03,440
and it worked other than like the server

538
00:21:00,880 --> 00:21:06,320
was overloaded with submissions and it

539
00:21:03,440 --> 00:21:07,840
crashed a couple times so I fixed that

540
00:21:06,320 --> 00:21:12,080
over the week for the

541
00:21:07,840 --> 00:21:14,640
n910s I got this um slow API rate

542
00:21:12,080 --> 00:21:17,080
limiter that only allowed one IP to do

543
00:21:14,640 --> 00:21:19,799
three requests a minute and I also added

544
00:21:17,080 --> 00:21:22,200
all these security features for bidding

545
00:21:19,799 --> 00:21:25,039
certain libraries and certain functions

546
00:21:22,200 --> 00:21:26,919
and so for 910 I was confident and the

547
00:21:25,039 --> 00:21:28,679
speech wasn't this is just experimental

548
00:21:26,919 --> 00:21:31,640
probably not going to work guys you're

549
00:21:28,679 --> 00:21:34,080
going to love it the 78s loved it and

550
00:21:31,640 --> 00:21:34,080
here's what

551
00:21:34,200 --> 00:21:40,400
happened that remote

552
00:21:37,080 --> 00:21:45,120
address in a venue which was the library

553
00:21:40,400 --> 00:21:47,120
of the docks somehow every single IP in

554
00:21:45,120 --> 00:21:49,720
the building sorry every single computer

555
00:21:47,120 --> 00:21:52,679
in the building had the same IP so

556
00:21:49,720 --> 00:21:55,080
instead of limiting one team to three

557
00:21:52,679 --> 00:21:57,240
submissions a minute we limited all the

558
00:21:55,080 --> 00:22:00,679
teams to three submissions a

559
00:21:57,240 --> 00:22:02,799
minute and it was like a car crash in

560
00:22:00,679 --> 00:22:05,279
slow motion because it's not like

561
00:22:02,799 --> 00:22:06,720
totally failing ah one team got in one

562
00:22:05,279 --> 00:22:09,159
team got in but we're running out of

563
00:22:06,720 --> 00:22:10,960
time and so we ran out of time and it

564
00:22:09,159 --> 00:22:14,720
was really really really

565
00:22:10,960 --> 00:22:17,120
frustrating but uh yeah still the

566
00:22:14,720 --> 00:22:19,360
feedback of that was oh I really want to

567
00:22:17,120 --> 00:22:21,279
do agent games I really wish that worked

568
00:22:19,360 --> 00:22:24,039
I really wish that worked so like I was

569
00:22:21,279 --> 00:22:26,640
fully committed to uh to doing agent

570
00:22:24,039 --> 00:22:27,880
games right so this is very much exactly

571
00:22:26,640 --> 00:22:29,159
the same thing that happened with the

572
00:22:27,880 --> 00:22:30,520
year before

573
00:22:29,159 --> 00:22:31,960
except this time I'm going to make it an

574
00:22:30,520 --> 00:22:33,480
open source project I'm going to try to

575
00:22:31,960 --> 00:22:35,880
get other people involved the quiz was

576
00:22:33,480 --> 00:22:40,840
staying that was all fine I have another

577
00:22:35,880 --> 00:22:43,440
kid and the history repeats itself um so

578
00:22:40,840 --> 00:22:44,679
making agent games bulletproof having

579
00:22:43,440 --> 00:22:49,120
student

580
00:22:44,679 --> 00:22:51,120
submissions run on my own server the key

581
00:22:49,120 --> 00:22:52,960
here was a mix of

582
00:22:51,120 --> 00:22:54,200
validation which used all of those

583
00:22:52,960 --> 00:22:57,480
things I realized I'm running out of

584
00:22:54,200 --> 00:22:59,559
time really quickly but most importantly

585
00:22:57,480 --> 00:23:02,679
every simulation ever ran in a Docker

586
00:22:59,559 --> 00:23:06,400
container and if your code was overly

587
00:23:02,679 --> 00:23:08,400
analytical overly slow it was rejected

588
00:23:06,400 --> 00:23:11,440
if it managed the simulation against a

589
00:23:08,400 --> 00:23:13,159
bunch of dummy teams in under 3 seconds

590
00:23:11,440 --> 00:23:14,679
your file was saved on our server and we

591
00:23:13,159 --> 00:23:17,720
were going to simulate you and that was

592
00:23:14,679 --> 00:23:20,760
all going to run

593
00:23:17,720 --> 00:23:22,200
so this is what the back end looked like

594
00:23:20,760 --> 00:23:25,720
when we run a

595
00:23:22,200 --> 00:23:28,760
simulation um students and us we get to

596
00:23:25,720 --> 00:23:30,200
see this uh feedback in PDF that they

597
00:23:28,760 --> 00:23:33,120
get to see how they did against other

598
00:23:30,200 --> 00:23:34,320
teams and adjust their strategy based on

599
00:23:33,120 --> 00:23:37,520
that

600
00:23:34,320 --> 00:23:40,240
feedback um in terms of the platform the

601
00:23:37,520 --> 00:23:44,240
coolest thing that I did was I made the

602
00:23:40,240 --> 00:23:45,640
game itself really kind of extensible it

603
00:23:44,240 --> 00:23:47,679
only takes about two to four hours to

604
00:23:45,640 --> 00:23:49,000
make a new game by the way I'll be here

605
00:23:47,679 --> 00:23:51,880
for the developer Sprints and if

606
00:23:49,000 --> 00:23:57,039
anybody's got cool game ideas I would

607
00:23:51,880 --> 00:23:59,240
love to hear them um and yeah

608
00:23:57,039 --> 00:24:01,720
um I'm going to have to skip a whole

609
00:23:59,240 --> 00:24:06,240
bunch of slides but I'll definitely show

610
00:24:01,720 --> 00:24:07,720
you this one the agent games the event

611
00:24:06,240 --> 00:24:10,279
went really well but first we had

612
00:24:07,720 --> 00:24:13,760
prelims and in the prelims we had about

613
00:24:10,279 --> 00:24:15,559
700 submissions and several successful

614
00:24:13,760 --> 00:24:18,120
hacks and teams just beating everybody

615
00:24:15,559 --> 00:24:21,440
with a 100% score the most interesting

616
00:24:18,120 --> 00:24:23,840
of which was the one on the screen

617
00:24:21,440 --> 00:24:25,679
there a kid figured out that we're using

618
00:24:23,840 --> 00:24:29,440
the random

619
00:24:25,679 --> 00:24:31,960
Library he then found a way to Brute

620
00:24:29,440 --> 00:24:34,120
Force random so that every single time

621
00:24:31,960 --> 00:24:39,640
for every single thing he did the dice

622
00:24:34,120 --> 00:24:39,640
roll a six and so even after a thousand

623
00:24:40,080 --> 00:24:44,679
simulations like he stops at a 100 he

624
00:24:42,799 --> 00:24:46,399
stops when he wins he like doesn't

625
00:24:44,679 --> 00:24:48,360
because he only get sixes it was like

626
00:24:46,399 --> 00:24:52,440
the most genius thing I've ever

627
00:24:48,360 --> 00:24:55,399
seen so um yeah I mean I'm GNA fast

628
00:24:52,440 --> 00:24:56,679
forward the competition went well we had

629
00:24:55,399 --> 00:24:59,960
one funny

630
00:24:56,679 --> 00:25:02,080
bug we had a Myst team appear now I

631
00:24:59,960 --> 00:25:03,480
checked all the server logs nobody

632
00:25:02,080 --> 00:25:05,640
logged into the server I was really

633
00:25:03,480 --> 00:25:08,600
paranoid what had happened is because I

634
00:25:05,640 --> 00:25:11,760
had outsourced my vanilla JS front end

635
00:25:08,600 --> 00:25:13,880
to a freelancer who did it in react he

636
00:25:11,760 --> 00:25:16,720
was kind enough to put a sign up button

637
00:25:13,880 --> 00:25:18,960
there um and that was the only security

638
00:25:16,720 --> 00:25:21,640
breach we had thanks to you know get up

639
00:25:18,960 --> 00:25:23,679
automated deployments I uh I got rid of

640
00:25:21,640 --> 00:25:26,440
that in about a minute but I was really

641
00:25:23,679 --> 00:25:27,919
sweating for about an hour a couple of

642
00:25:26,440 --> 00:25:30,559
uh nice things to say about people at

643
00:25:27,919 --> 00:25:33,520
help uh this was the freelancer Muhammad

644
00:25:30,559 --> 00:25:34,520
he wrote the the front end Matthew there

645
00:25:33,520 --> 00:25:37,440
who

646
00:25:34,520 --> 00:25:41,240
is a master student helped me with the

647
00:25:37,440 --> 00:25:43,159
docka um Han who is the head shooter of

648
00:25:41,240 --> 00:25:45,039
the first year subject in Union

649
00:25:43,159 --> 00:25:47,919
Melbourne did a whole lot of testing and

650
00:25:45,039 --> 00:25:49,440
made the agents more secure and Nathan

651
00:25:47,919 --> 00:25:52,240
made the markdown

652
00:25:49,440 --> 00:25:55,640
feedback and this is the

653
00:25:52,240 --> 00:25:58,679
repo and in the future I plan to try to

654
00:25:55,640 --> 00:25:59,919
share this with uni institutions School

655
00:25:58,679 --> 00:26:04,039
other

656
00:25:59,919 --> 00:26:07,919
competitions yeah and uh thank you very

657
00:26:04,039 --> 00:26:10,200
much I had a lot of fun um for the uh

658
00:26:07,919 --> 00:26:12,480
platform if you can help out with any of

659
00:26:10,200 --> 00:26:15,279
these um Docker performance

660
00:26:12,480 --> 00:26:17,520
improvements uh deployment on Windows I

661
00:26:15,279 --> 00:26:19,279
hate windows I wish this thing could

662
00:26:17,520 --> 00:26:21,640
just work on

663
00:26:19,279 --> 00:26:24,559
Windows so if somebody could do that

664
00:26:21,640 --> 00:26:26,440
that would be nice the feedback tends to

665
00:26:24,559 --> 00:26:28,919
be too long uh we need to make that

666
00:26:26,440 --> 00:26:31,279
markdown searchable so yeah those are

667
00:26:28,919 --> 00:26:34,440
some of the issues uh that I'm about to

668
00:26:31,279 --> 00:26:38,510
document nicely on the repo and yeah

669
00:26:34,440 --> 00:26:45,650
that's everything thank you very much

670
00:26:38,510 --> 00:26:45,650
[Applause]