package com.codegym.task.task04.task0427;

/*
Describing numbers

*/

import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        //write your code here
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        String s = reader.readLine();
        int n = Integer.parseInt(s);

        //System.out.println(n);
        if((!(n > 0)) || (!(n < 1000))){

        }
         else if((n%2)==0 && n < 10){
            System.out.println("even single-digit number");
        }
         else if((n%2)!=0 && n < 10){
            System.out.println("odd single-digit number");
        }
         else if((n%2)== 0 && n >= 10){
            System.out.println("even two-digit number");
        }
         else if((n%2)!= 0 && n >= 10){
            System.out.println("odd two-digit number");
        }
         else if((n%2 == 0) && n >= 100){
            System.out.println("even three-digit number");
        }
        else if((n%2 != 0) && n >= 100){
            System.out.println("odd three-digit number");
        }
    }

}