#include <stdio.h>
int main(void)
{
int i, n;
for(i=0;i<n;i++)
{
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CmludCBtYWluKHZvaWQpCnsKICAgIGludCAgaSwgbjsKICAgIHByaW50ZigiSW5wdXQgbjoiKTsKICAgIHNjYW5mKCIlZCIsICZuKTsKICAgIGZvcihpPTA7aTxuO2krKykKICAgIHsKICAgICAgICBwcmludGYoIioiKTsKICAgIH0KICAgIHJldHVybiAwOwp9