import java.io.*;
class sa
{
    public static void main () throws IOException
    {
        int count =0;
        int count1=0;
        BufferedReader br = new BufferedReader (new InputStreamReader (System.in));
        System.out.println ("Enter a sentence");

        String sent = br.readLine();

        String sent1 = sent + " ";
        int l = sent1.length();
        for (int a =0; a<l; a++)
        {
            if (sent1.charAt(a) == ' ')
            {
                count ++;
            }
        }
        String sentarr[] = new String[count];


        boolean isSpace = false;
        for (int c=0; c<l; c++)
        {
            char x= sent1.charAt(c);
            if (x != ' ')
            {
                if(isSpace == true)
                {
                    isSpace = false;
                    sentarr[count1] = x;
                }
                else
                {
                    sentarr[count1] = sentarr[count1] + x;
                }
            }
            if (x == ' ')
            {
                count1++;
                isSpace = true;
            }
        }
        System.out.println ("Number of words =" + count);
        for (int d=0; d<count; d++)
        {
            System.out.println ("At index number" + d + " word is " + sentarr[d]);
        }
    }
}