package com.codegym.task.task04.task0427;

import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
          int a = Integer.parseInt(bufferedReader.readLine());

        if(a>=1 && a<=999){

        if (a % 2==0 && a<10)
        System.out.println("even single-digit number");
        else if (a % 2 ==1 && a<10)
            System.out.println("odd single-digit number");
        else if (a % 2==0 && a<100)
            System.out.println("even two-digit number");
        else if (a % 2==1 && a<100)
            System.out.println("odd two-digit number");
        else if (a % 2==0 && a<1000)
            System.out.println("even three-digit number");
        else  if (a % 2==1 && a<1000)
            System.out.println("odd three-digit number");
        }
    }
}