using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter the number of students in the class:");

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

        Console.WriteLine("Enter the number of chairs:");

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

        int Num = ( St - Ch);

        int Num2 = ( Ch - St);

        if ( St > Ch )

        {

            Console.WriteLine( Num +  (" chairs are missing in the classroom and "));

             Console.Write(  Num + (" students have nowhere to sit ") );

        }

        else if ( St < Ch )

                Console.WriteLine(("There are ") + Num2 + (" extra chairs in the classroom "));

    }

}