import java.util.Scanner;

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/**
 *
 * @author user
 */
public class Ejercicio10 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] dias_laborales = new String[5];
        String input = new String();
        
        dias_laborales[0] = "lunes";
        dias_laborales[1] = "martes";
        dias_laborales[2] = "miercoles";
        dias_laborales[3] = "jueves";
        dias_laborales[4] = "viernes";      
        
        System.out.print("Introduzca un dia: ");
        input = sc.nextLine();
        System.out.println("");       
        
        for (int i = 0; i < 5; i++) {
            if(input.compareTo(dias_laborales[i]) == 0){
                System.out.println("Es laboral!");
                return;
            }
        }
        
        System.out.println("No es laboral!");
        
        
    }
}