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

int main(){
  int l, m, n;
  cin >> l >> m >> n;
  int sum = l * 100 + m * 25 + n * 1;
  int coin = sum % 1000;
  int ans = coin / 100;
  coin %= 100;
  ans += coin / 25;
  coin %= 25;
  ans += coin / 1;
  cout << ans << endl;
}