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;
        if(n < 25)  ans += n;
        else {
            m += n / 25;
            ans += n % 25;
        }
        if(m < 4)  ans += m;
        else {
            l += m / 4;
            ans += m % 4;
        }
        if(l < 10)  ans += l;
        else {
            ans += l % 10;
        }

        System.out.println(ans);
    }

}