#include <stdio.h>
int main(void) {
int a;
if(a==0){
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CgogICAgaW50IGE7CiAgICBzY2FuZigiJWQiLCZhKTsKICAgIAogICAgaWYoYT09MCl7CiAgICAJCiAgICAJcHJpbnRmKCIw44Gn44GZIik7CiAgICB9CiAgCgoJcmV0dXJuIDA7Cn0K