import java.util.Scanner;

public class Main {

	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 ans = 0;
		m += n / 25;
		n -= n / 25 * 25;
		l += m / 4;
		m -= m / 4 * 4;
		l -= l / 10 * 10;
		ans += m + n + l;
		System.out.println(ans);
 	}
}