import java.util.*;

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 H = sc.nextInt();

		int h = H/25;
		M += h;
		int m = M/4;
		L += m;
		int l = L/10;

		int count = H-h*25 + M-m*4 + L-l*10;

		System.out.println(count);
	}
}