using System;

public class Program

{

    public static void Main()

    {

     Console.WriteLine("Creat user name");

     string userNaim1 = Console.ReadLine();

     Console.WriteLine("Creat  password");

     string passWord1 = Console.ReadLine();

     Console.WriteLine("Creat user name");

     string userNaim2 = Console.ReadLine();

     Console.WriteLine("Creat password");

     string passWord2 = Console.ReadLine();

     Console.WriteLine("Enter user name");

     string userNaim = Console.ReadLine();

     Console.WriteLine("Enter  password");

     string passWord = Console.ReadLine();

    if (userNaim == userNaim1 &&  passWord == passWord1 || userNaim == userNaim2 &&  passWord == passWord2)

    {

        Console.WriteLine("Wellcame");

    }

    else 

    {

        Console.WriteLine("User not exsit");

    }

    }

}