#include<stdio.h>
int main(void)
{
int a;
volatile int b;
volatile int c;
int d;
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KaW50IG1haW4odm9pZCkKewogICAgaW50IGE7CiAgICB2b2xhdGlsZSBpbnQgYjsKICAgIHZvbGF0aWxlIGludCBjOwogICAgaW50IGQ7CiAgICBwcmludGYoIiVwXG4iLCAodm9pZCopJmEpOwogICAgcHJpbnRmKCIlcFxuIiwgKHZvaWQqKSZiKTsKICAgIHByaW50ZigiJXBcbiIsICh2b2lkKikmYyk7CiAgICBwcmludGYoIiVwXG4iLCAodm9pZCopJmQpOwogICAgcmV0dXJuIDA7Cn0K