using System;

public class Program

{

    public static Stack<int> GSL(Stack<string> str )

    {

        Stack<str> news=FlipStack(str);

        Stack<int> stl= new Stack<int>;

        while(!news.Isempty)

        {

            string t=news.Pop();

            stl.Push(t.Length);

        }

        return stl;

    }

    public static Stack<str> FlipStack(Stack<str> s)

    {

        Stack<int> newS = new Stack<int>;

        Stack<int> tmp = CloneStack(s); //!

        while (!tmp.IsEmpty())

            newS.Push(tmp.Pop());

        return newS;

    }

    public static Stack<str> CloneStack(Stack<str> s)

    {

        Stack<str> newS= new Stack<str>();

        Stack<str> tmp = new Stack<str>();

        while (!s.IsEmpty())

        tmp.Push(s.Pop());

        while (!tmp.IsEmpty())

        {

            newS.Push(tmp.Top());

            s.Push(tmp.Pop());

        }

            return newS;

    }

    public static void Main()

    {

    }

}