import java.util.Scanner;
public class Yukicoder {

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

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

		int sum = 0;

		M += N / 25;
		sum += N % 25;

		L += M / 4;
		sum += M % 4;

		sum += L % 10;

		System.out.println(sum);

	}

}