using System;

public class Program

{

    public static bool IsPrime (int n)

    {

        bool flag = true;

        int i;

        for (i=2; i<n; i++)

        {

            if (n%i==0)

                flag=false;

        }

        return flag;

    }

    public static bool IsPrime1 (int n)

    {

        int i;

        for (i=2; i<n; i++)

        {

            if (n%i==0)

                return false;

        }

        return true;

    }

    public static void Main()

    {

        Console.WriteLine(IsPrime1(3));

    }

}