using System;

public class Program

{

    static Random random = new Random();

​

    public static void Main()

    {

        int rateUseUIF = 30;

        int randomNumber = random.Next(0, 100);

        Console.WriteLine((randomNumber< rateUseUIF) ? "Use UIF":"Use Phonixx");

        for(int i = 0;  i<100; i++)

            Console.WriteLine((random.Next(0, 100)< rateUseUIF) ? "Use UIF":"Use Phonixx");

    }

}