User dchoo333

From Christ Church Grammar School, CCCGSH Informatics

About

Visitors

Why are you even looking here lol

W Viv_CCGS

Problems

Problemsetter permissions!! I'm making problems on every hyperoperation:

$H_0$ ~H_0~: Successor Function

$H_1$ ~H_1~: Addition

$H_2$ ~H_2~: Multiplication

$H_3$ ~H_3~: Exponentiation

$H_4$ ~H_4~: Tetration (12p)

$H_5$ ~H_5~: Pentation

The 12p Grind

On 22nd January 26, I discovered dnialh_ has solved every 17 point problem. This motivated me to start one of these on my own. However, I am not as good of a coder, so I'll be doing 12 pointers instead 😂

2026-01-22 - Starting 12p grind (24/454)

2026-02-23 - One page completed (50/454)

2026-04-01 - Two Pages Completed (100/454)

Small Wins

First user to solve GCJ16R1AB, Bob & Binary Strings in Python

First user to solve Waterloo '08 Spring E - Balance, apparently (I don't know why xuxiaogengxu's solutions are not counted...) - Check Unofficial_Hints_For_Problems to see the formula which I used to solve it.

Made a Visual Basic Solution to:

(Lol why is the test data weak)

Math Merchant

Grinding 20p+ math problems

20p: A Times B, Necklace Factory, Prime Bag, Alien Navigation

25p: A Very Normal Test, Hiring Employees, Bob and Binary Strings, Tower of Power

30p: Arrow, Course Design, Intranets

#include <bits/stdc++.h>
using namespace std;int
main() {
int a=67;                       a^=1;               a+=2;
int b=97;                       b^=1;               b|=1;
int c=11;                 c^=1>>(1|(0<<1));   c = (*(&a))+(b-51);
int d=18;                 d^=0>>(1|(1<<0));   d = (*(&c))-(a-59);
int e=03;                        e^=1;               e+=115;
int f=115;                       f^=1;               f=e-2;
cout<<(char)a<<(char)b;
cout<<(char)c<<(char)d;
cout<<(char)e<<(char)f;
}