#include <iostream>
using namespace std;
int f1( int i)
{  return 3 * i +1;
}
int f2( int i)
{  return i/2; //integer division!
}
int main()
{ cout << f1(7)<<endl;
  cout << f2(22)<<endl;
  cout << f2(f1(7))<<endl;
  return 0;
}