#include <iostream>
using namespace std;

int main(){
  int a, b, c;

  while(cin >> a >> b >> c){
    int div = c / 25;
    b += div;
    c -= div * 25;

    div = b / 4;
    a += div;
    b -= div * 4;

    div = a / 10;
    a -= div * 10;

    cout << a + b + c << endl;
  }
}