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

		b += c / 25;
		int sum = b / 4;
		a += sum;
		b -= sum * 4;
		sum = a / 10;
		a -= sum * 10;
		System.out.println(a + b + c);

	}
}