import java.util.Scanner;

public class ParaulesSenars {

  public static void main (String[] args) {
    Scanner lector = new Scanner(System.in);

    System.out.println("Escriu una frase de diverses paraules:");
    String frase = lector.nextLine();

    String[] arrayParaules = frase.split(" ");
    for(int i = 0; i < arrayParaules.length; i = i + 2) {
      System.out.print (arrayParaules[i] + " ");
    }
  }
}