#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,j)  for(int i=0; i<j; i++)
#define vi vector<int>
#define vvi vector<vector<int>>
#define sr(a) sort(a.begin(),a.end())

signed main(){
  int a,b,c; cin>>a>>b>>c;
  int m=100*a+25*b+c;
  int sum=0;
  m=m%1000;
  sum+=m/100;
  m=m%100;
  sum+=m/25;
  m=m%25;
  sum+=m;
  cout<<sum<<endl;
}