import java.util.Scanner;
class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt(),c = sc.nextInt();
		
		if(c  >= 25) {
			b += c / 25;
			c = c % 25;
		}
		if(b >= 4) {
			a += b / 4;
			b = b % 4;
		}
		a = a % 10;
		
		System.out.println(a + b + c);
	}
}