#include <iostream>
#include <list>
#include <vector>
#include <string>
#include <stdio.h>
#include <stdint.h>
using namespace std;

using uint = unsigned int;
using ll = long long;

int main()
{

  ll L;
  cin >> L;
  ll M;
  cin >> M;
  ll N;
  cin >> N;

  M += N / 25;
  N %= 25;

  L += M / 4;
  M %= 4;

  L %= 10;
  
  cout << N + M + L << endl;
  return 0;

}