Coding ClubParticipant login
CODING CLUB PRESENTS THE 2026 EDITION

Out of sight.
Into memory._

The screen goes dark. Your mind takes over.
One program. Twenty minutes. Just you and what you remember.

Enter the challenge Explore the rules
Individual event·C language·One final submission
YOUR MEMORY IS THE EDITOR.01 / 02
remember_this.cC
01
02
03
04
05
06
07
08
09
10
11
12
#include <stdio.h>

int main(void) {
    int n, sum = 0;
    scanf("%d", &n);

    for (int i = 1; i <= n; i++) {
        sum += i;
    }

    printf("%d", sum);
}
And then, nothing.
TIME TO REMEMBER05:00
THE ULTIMATE MEMORY TEST
LESS SCREEN. MORE INSTINCT.SCROLL TO DISCOVER 20 MINUTES. ZERO DISTRACTIONS.
THE FORMAT

A little time.
A lot of nerve.

It’s simple on paper. A different story
when the screen goes black.

/01
05MINUTES

Study the source.

Look closely. Trace the logic. Make every line count. This is your only time with the code.

/02
15MINUTES

Trust your memory.

A completely black screen. No cursor, no hints. Recreate the C program from memory.

/03
⌃ ↵CTRL + ENTER

Make your move.

One shortcut. One final submission. Your accuracy comes first. Speed breaks the tie.

NO AUTOCOMPLETE. ALL YOU.

Your best IDE?
The one in your head.

Three nominees from every team. Three independent challengers.
One leaderboard. This time, you write your own place in it.

I’m up for it