using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        Regex s = new Regex(@"/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)[a-zA-Z\d]{6,100}$/");

        string test = "1";

        Console.WriteLine(s.IsMatch(test));

    }

}