hint: integer overflow

include <stdlib.h>

include <stdio.h>

int main(){ setvbuf(stdout, NULL, _IONBF, 0); setvbuf(stdin, NULL, _IONBF, 0);

int acc = 0;
int n;
while (acc >= 0){
    printf("acc = %d\n", acc);
    printf("Enter a number: ");

    if (scanf("%d", &n) != 1){
        puts("Error reading integer");
    } else {
        if (n < 0){
            puts("You can't enter the negative number!");
        } else {
            acc += n;
        }
}
 // デバッグ用: 強制的にaccを負の値に設定
    if (acc >= 1000) {
        acc = -1;

    }
}

printf("You win! acc = %d\n", acc);
system("cat ./flag.txt");

}

Chat gpt helped me whit this

Solved without downloading the source file : )

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

im honestly about to give up

Don't. Try and read about certain datatypes!

hint: integer overflow

Solved without downloading the source file : )

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok

Yooooooooooo, tambah tambah tambah sampai mentok