import java.util.Scanner;

public class Main {

	static Scanner sc = new Scanner(System.in);

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