[groom] 거스름돈

import java.io.*;
class Main {
	public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int input = Integer.parseInt(br.readLine());
        int[] ints = new int[]{40, 20, 10, 5, 1};
        int ret = 0;
        for (int i = 0; i < ints.length; i++) {
            if (input % ints[i] == 0) {
                ret = ret + (input / ints[i]);
                break;
            } else {
                ret = ret + (input / ints[i]);
                input = input % ints[i];
            }
        }
        System.out.println(ret);
	}
}