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import java.io.*;
import java.util.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        //在此编写你的代码
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int num = Integer.parseInt(reader.readLine());
        //Scanner input = new Scanner(System.in);
        //int num = input.nextInt();
        if (num >= 1 && num < 10) {
            if (num % 2 == 0) {
                System.out.println("一位偶数");
            }
        } else {
            if (num >= 10 && num < 100) {
                if (num % 2 == 0) {
                    System.out.println("两位偶数");
                }
            }
            if (num >= 100 && num < 1000) {
                if (num % 2 == 0) {
                    System.out.println("三位偶数");
                }
            }
        }
        if (num >= 1 && num < 10) {
            if (num % 2 != 0) {
                System.out.println("一位奇数");
            }
        } else {
            if (num >= 10 && num < 100) {
                if (num % 2 != 0) {
                    System.out.println("两位奇数");
                }
            }
            if (num >= 100 && num < 1000) {
                if (num % 2 != 0) {
                    System.out.println("三位奇数");
                }
            }
        }
    }
}