using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var items = @"m²

m2

kg/m³

kg/m2

kg/m3

g/m2

kg/m²

g/m²".Split(Environment.NewLine).ToList();

        var distinct = items.Distinct(StringComparer.InvariantCultureIgnoreCase);

        Console.WriteLine(items.Count());

        Console.WriteLine(distinct.Count());

    }

}