package chapter18;
import java.io.*;
public class Echo {
	public static void main(String args[])throws IOException{
		BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));
		/*
		 * 從標準輸入中讀取
		 */
		String s;
		while((s=stdin.readLine())!=null&& s.length()!=0){
			System.out.println(s);
			
		}	
	}
}