import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();// 100
		int b = sc.nextInt();// 25
		int c = sc.nextInt();// 1

		int ans = (100 * a + 25 * b + c) % 1000;
		System.out.println(ans / 100 + ans % 100 / 25 + ans % 100 % 25);

	}
}