#include<bits/stdc++.h>
using namespace std;

int main(void)
{
  char c1, c2, c3;
  cin >> c1 >> c2 >> c3;
  if (c2 == '?')
    cout << "14" << endl;
  else if (c2 == '2')
    cout << '4' << endl;
  else
    cout << '1' << endl;
  return 0;
}