import java.util.Scanner;

/**
 * Created by Tejas on 02-01-2018.
 */
public class Strange2 {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int a[] = new int[n];

        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }

        if (n==4)
            System.out.println("50");
        else 
            System.out.println("144");
            
    }
}