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

int main(){
  int x=0,L,M,N;
  int a=0,b=0,c=0;
  cin >> L >> M >> N;
  
  x = (100*L+25*M+N)%1000;
  a = x/100;
  x %= 100;
  b = x/25;
  x %= 25;
  c = x;
  
  cout << a+b+c << endl; 
  
  return 0;
}