#include <stdio.h>
int main(void)
{
    int  i, n;
    for(i=0;i<n;i++)
    {
    }
    return 0;
}
 
				I2luY2x1ZGUgPHN0ZGlvLmg+CmludCBtYWluKHZvaWQpCnsKICAgIGludCAgaSwgbjsKICAgIHByaW50ZigiSW5wdXQgbjoiKTsKICAgIHNjYW5mKCIlZCIsICZuKTsKICAgIGZvcihpPTA7aTxuO2krKykKICAgIHsKICAgICAgICBwcmludGYoIioiKTsKICAgIH0KICAgIHJldHVybiAwOwp9Cg==