using System;

public class Program

{

    public static void Main()

    {

        for(int i=1;i<=5;i++)

        {Console.WriteLine(i);}

        int sbor =0;

        for(int x=1;x<=10; x++)

        {sbor=sbor+x;}

        Console.WriteLine(sbor);

        int pr=1;

        for(int p=1;p<=9;p=p+2)

            {pr=pr*p;}

        Console.WriteLine("1*3*5*7*9={0}",pr);

    }

}