using System;

public class Program

{

    public static void Main()

    {

        int i=1;

        int j=1 ;

        int n=4;

        for (i=1; i<=n; i++)

        {

            n=n-1;

        }

        for(j=1; j<i;j++)

        {

            i=i-1;

        }

        Console.WriteLine(j+ " ");

    }

}