#include <bits/stdc++.h> 
using namespace std;
#include <ios>
#include <iomanip>
#include <iostream>
#include <string>
#include <algorithm>

int main(){
  int a, b, c;
  cin >>a>>b>>c;
  b = b+(c/25);
  c = c%25;
  a = a+(b/4);
  b = b%4;
  int aF = a/10;
  a = a%10;
  cout << a+b+c;
  
  
}