#include<iostream>
#include<algorithm>
#include<stdio.h>
#include<stdlib.h>
#include<vector>
#include<string>
#include<sstream>
using namespace std;


int main(){

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

  int total = l*100 + m*25 + n*1;

  while( total >= 1000 ){
    total -= 1000;
  }
  while( total >= 100 ){
    total -= 100;
    ans++;
  }
  while( total >= 25 ){
    total -= 25;
    ans++;
  }
  while( total > 0 ){
    total -= 1;
    ans++;
  }
  cout << ans << endl;

  return 0;
}