//
// See https://theweeklychallenge.org/blog/perl-weekly-challenge-002
//

//
// Run as: ln ch-1.java ch1.java; javac ch1.java; java ch1 < input-file
//

import java.util.*;

public class ch1 {
    public static void main (String [] args) {
        Scanner scanner = new Scanner (System . in);
        while (scanner . hasNextInt ()) {
            System . out . println (scanner . nextInt ());
        }
    }
}