// Month
package validMonths;
import java.util.*;
public class Months {
  public static void main(String[] args) {
    Scanner keyboard=new Scanner(System.in); //do just once
    int month;
    System.out.print("Enter the number of a month:");
    month=keyboard.nextInt();
    System.out.println((month<1 || month>12)? "not valid": "valid");
  }//main
}//class