#include<iostream>
#include<string>
#include<algorithm>
#include<cmath>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include<random>
#include<ctime>
#include<cstdlib>
using namespace std;

int main(){

  int l, m, n, ans=0;
  cin >> l >> m >> n;

  ans+=n%25;
  m+=n/25;
  ans+=m%4;
  l+=m/4;
  ans+=l%10;

  cout << ans << endl;

  return 0;
}