using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(FindRecursive(11));

        Console.WriteLine(FindRecursive(2));

        Console.WriteLine(FindRecursive(3));

        Console.WriteLine(FindRecursive(31));

        Console.WriteLine(FindRecursive(50));

        Console.WriteLine(FindRecursive(51));

    }

    public static bool FindRecursive(int target, int timesThree = 1, int plusFive = 1) {

        if (timesThree == target || plusFive == target)

            return true;

        if (timesThree > target && plusFive > target)

            return false;

        return FindRecursive(target, timesThree * 3, plusFive + 5);

    }

}