import java.util.Scanner;

public class No32 {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);

		int L = scan.nextInt();
		int M = scan.nextInt();
		int N = scan.nextInt();

		int sum = 100 * L + 25 * M + 1 * N;
		int maisu1 = sum % 1000;
		int maisu2 = maisu1 / 100;
		int maisu3 = (maisu1 % 100) / 25;
		int maisu4 = (maisu1 % 100) % 25;

		int maisu = maisu2 + maisu3 + maisu4;
		System.out.println(maisu);

		scan.close();
	}

}