/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
    public static void main (String[] args) throws java.lang.Exception
    {
        // your code goes here
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int sum = 0;
        sum += 100 * Integer.parseInt(br.readLine());
        sum +=  25 * Integer.parseInt(br.readLine());
        sum += Integer.parseInt(br.readLine());
        
        int coin = sum%1000;
        int ans = coin/100;
        coin = coin%100;
        ans += coin/25;
        coin = coin%25;
        ans += coin;
        System.out.println(ans);
    }
}