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));

        int num = Integer.parseInt(reader.readLine());
        int count = 0;
        if (num>0 && num<1000){
        while(num!=0){
        	num /=10;
        	count++;
                if (num%2==0 && count==1)
        		System.out.println("even single-digit number");

        	else if (num%2 == 1 && count==1)
        			System.out.println("odd single-digit number");


        	 if (num%2==0 && count==2)
        		System.out.println("even two-digit number");

             else if (num%2 == 1 && count==2)
        			System.out.println("odd two-digit number");


            if (num%2==0 && count==3){
        		System.out.println("even three-digit number");

        	else if (num%2 == 1 && count==3)
        			System.out.println("odd three-digit number");