#include <iostream>
using namespace std;

int main(){
  int l;
  int m;
  int n;
  
  cin >> l >> m >> n;
  
  l = (l + (m + (n / 25)) / 4) % 4;
  m = (m + (n / 25)) % 4;
  n = n % 25;
  
  cout << l + m + n << endl;
  return 0;
}