package no032;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int l = sc.nextInt();
		int m = sc.nextInt();
		int n = sc.nextInt();
		m += n / 25; n -= (n / 25) * 25;
		l += m / 4;  m -= (m / 4) * 4;
		l %= 10;
		System.out.println(l + m + n);
	}

}