#include<iostream>
using namespace std;
#define PI 3.14;
int main()
{
cout << PI
return 0;
}
ICAgICNpbmNsdWRlPGlvc3RyZWFtPgogICAgdXNpbmcgbmFtZXNwYWNlIHN0ZDsKICAgICNkZWZpbmUgUEkgMy4xNDsKICAgIGludCBtYWluKCkKICAgIHsKICAgICAgICAgICAgY291dCA8PCBQSSAKICAgICAgICAgICAgcmV0dXJuIDA7CiAgICB9