#include<stdio.h>
#define exp(a) (a+a * 5 / a*a)
int main( void )
{
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KI2RlZmluZSBleHAoYSkgKGErYSAqIDUgLyBhKmEpCmludCBtYWluKCB2b2lkICkKCnsKCiAgICAgaW50IHggPSBleHAoMysyKSAqIDU7CiAgICAgcHJpbnRmKCJWYWx1ZSBvZiBYPSVkIix4KTsKICAgICByZXR1cm4gMDsKfQo=