#include <stdio.h>
int main()
{
int number;
char nl = 0;
while ( scanf("%d%c", &number
, &nl
) != EOF
) {
if (nl == '\n')
break;
}
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbigpCnsKICAgIGludCBudW1iZXI7CiAgICBjaGFyIG5sID0gMDsKCiAgICB3aGlsZSAoIHNjYW5mKCIlZCVjIiwgJm51bWJlciwgJm5sKSAhPSBFT0YpCiAgICB7CiAgICAgICAgcHJpbnRmKCIlZCBcbiIsIG51bWJlcik7CgogICAgICAgIGlmIChubCA9PSAnXG4nKQogICAgICAgICAgICBicmVhazsKICAgIH0KfQ==