/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Set<String> words = new HashSet<String>();
		Scanner in = new Scanner(System.in);
		while(in.hasNext())
		{
    		String word = in.next();
    		words.add(word);
    		System.out.println(word);
		}
		System.out.println("Done");
	}
}

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d29yZDEKd29yZDIgd29yZDMKd29yZDQ=

word1
word2 word3
word4