#include <stdio.h>
#include <math.h>
int main(void) {
int n;
int i;
int j;
for (i = 2; i <= n; i++) {
for (j = 1; j <= i; j++) {
}
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxtYXRoLmg+CgppbnQgbWFpbih2b2lkKSB7CiAgaW50IG47CiAgaW50IGk7CiAgaW50IGo7CiAgCiAgcHJpbnRmKCJuID0gIik7CiAgc2NhbmYoIiVkIiwgJm4pOwogIGZvciAoaSA9IDI7IGkgPD0gbjsgaSsrKSB7CiAgICBmb3IgKGogPSAxOyBqIDw9IGk7IGorKykgewogICAgICBwcmludGYoIiUuMGYgIiwgcG93KGksIGopKTsKICAgIH0KICAgIHByaW50ZigiXG4iKTsKICB9CiAgCiAgcmV0dXJuIDA7Cn0=