using System;

using System.Linq;

public class Program

{

    static bool HasMoreThanTwoZeros(int num)

    {

        string numStr = num.ToString();

        return numStr.Count(c => c == '0') > 2;

    }

​

    public static void Main()

    {

        int num = 4200;

        int num1 = 40200;

​

        if (HasMoreThanTwoZeros(num)) {

            Console.WriteLine("num has 3 or more 0's");

        }

        if (HasMoreThanTwoZeros(num1)) {

            Console.WriteLine("num1 has 3 or more 0's");

        }

    }

}