#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int a=0,b,c,d;
  cin>>b>>c>>d;
  c += d/25;
  d %= 25;
  b += c/4;
  c %= 10;
  a += b/10;
  b %= 10;
  cout<<b+c+d<<endl;
}