#include <stdio.h>
int main(void) {
int a=0,b,x;
x=-b/a;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CiAgICBpbnQgYT0wLGIseDsKCXByaW50ZigiYT0iKTsKICAgIHg9LWIvYTsKICAgIGlmKGI9PTApIHByaW50ZigicHQgY8OzIHZzbiIpOwogICAgZWxzZSBwcmludGYgKCJwdCB2biIpOwoJcmV0dXJuIDA7Cn0=