import java.util.*;

public class Streams {
    public static void main(String args[]) {
        Scanner userInput = new Scanner(System.in);
        String token = userInput.next();
    
        if ( token.equals("ERROR") )
            System.err.println("Standard Error: ERROR received.");

        System.out.println("Standard Output: " + token );
        System.err.println("Standard Error: " + token );

        
    }
}