#include <stdio.h>
int main(void) {
int i,j,m,n;
for(i=1;i<=m;i++)
{
for(j=1;j<=n;j++)
{
}
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CglpbnQgaSxqLG0sbjsKICAgIHByaW50ZigiaW5wdXQ6bSxuIik7CiAgICBzY2FuZigiJWQsJWQiLCZtLCZuKTsKICAgIGZvcihpPTE7aTw9bTtpKyspCnsKICAgIGZvcihqPTE7ajw9bjtqKyspCiAgICB7CiAgICBwcmludGYoImpoIik7CiAgICB9CiAgICBwcmludGYoIlxuIik7Cgp9CglyZXR1cm4gMDsKfQo=