import java.util.Scanner;

public class LabProgram {

   public static boolean isArrayEven(int[] arrayValues, int arraySize){
      for (int i = 0; i<arraySize;i++){
         if (arrayValues[i]%2 != 0){
            return false;
         }
      }
      return true;
   }
   public static boolean isArrayOdd(int[] arrayValues, int arraySize){
      for (int i = 0; i<arraySize;i++){
         if (arrayValues[i]%2 == 0){
            return false;
         }
      }
      return true;
   }

   public static void main(String[] args) {
      Scanner scnr = new Scanner(System.in);
      int[] myInts = new int[20];
      int numOfInts = scnr.nextInt();

      for (int i = 0; i<numOfInts;i++){
         myInts[i] = scnr.nextInt();
      }
      if (isArrayEven(myInts, numOfInts)){
         System.out.println("all even");
      }
      else if (isArrayOdd(myInts, numOfInts)){
         System.out.println("all odd");
      }
      else{
         System.out.println("not even or odd");
      }
   }
}