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

int main(){
  int l, m, n;
  cin >> l >> m >> n;
  int one = l % 25;
  int changed_one = l / 25;
  int twofive = (changed_one + m) % 4;
  int changed_twofive = m / 4;
  int hundred = (changed_twofive + n) % 10;
  cout << one + twofive + hundred << endl;
}