import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int l = Integer.parseInt(scanner.next());
        int m = Integer.parseInt(scanner.next());
        int n = Integer.parseInt(scanner.next());
        int total = (l + m + n);
        int count = 0;
        count += (total % 1000) / 100;
        count += (total % 100) / 25;
        count += (total % 25);
        System.out.println(count);
    }
}