ocr was an easy-ish machine learning misc challenge from the Google CTF 2022 Qualifier.
Train our neural network to read handwritten letters! I'm sure with the newest technological advances, you'll be able to do it with a tiny network and just a handful of training images.
Attachment
ocr.2022.ctfcompetition.com 1337
Feel free to skip this section if you're already familiar with basic neural networks.
| def code_args(func): | |
| return ( | |
| func.__code__.co_argcount, | |
| func.__code__.co_posonlyargcount, | |
| func.__code__.co_kwonlyargcount, | |
| func.__code__.co_nlocals, | |
| func.__code__.co_stacksize, | |
| func.__code__.co_flags, | |
| func.__code__.co_code, | |
| func.__code__.co_consts, |
| import java.util.*; | |
| import java.io.*; | |
| import java.lang.*; | |
| public class MallCop { | |
| private static Graph graph; | |
| private static int n; | |
| private static int[] distLeaf; | |
| private static int[] distStart; | |
| private static int ans; |
| [ | |
| { | |
| "text": "Alexander Suh, one of the primary officers of Dev Club, assigned club members to [u]create[/u] a PSAT website.", | |
| "choices": [ | |
| "creates", | |
| "writing", | |
| "PANIC because the sentence looks correct to you but \"NO CHANGE\" is not an option", | |
| "DELETE Alexander Suh" | |
| ], | |
| "correct": 3, |
| /* | |
| Flips Ion! | |
| Sets html height and body min-height so footer is in the right place | |
| Margin fixes the navbar | |
| transform: scaleX(-1) is the flipping | |
| */ | |
| html { | |
| height: 100%; | |
| } |