using System;

​

public class Program

{

    public static void Main()

    {

        int boy = 0, girl = 0, num;

        while (boy < 2 && girl < 2)

        {

            num = 0;

            while (num != 1 && num != 2)

            {

                Console.WriteLine("enter 1 for boy, 2 for girl ");

                num = int.Parse(Console.ReadLine());

            }

​

            if (num == 1)

                boy++;

            if (num == 2)

                girl++;

        }

​

        Console.WriteLine("boy: " + boy);

        Console.WriteLine("girl: " + girl);

    }

}