#define PI 3.14
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <iostream>

using namespace std;

int main() {
  int r;
  float s, p;
  cin >> r;
  s = PI * r * r;
  p = 2 * PI * r;
  cout << "masahat =" << s << " mohit = " << p;
  return 0;
}