10-基础练习 特殊回文数

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner cin = new Scanner(System.in);
		int n;
		n = cin.nextInt();

		if((n & 1) == 1) {
			for(int i = 1; i <= 9; i++) {
				for(int j = 0; j <= 9; j++) {
					for(int k = 1; k <= 9; k += 2) {
						if(i * 2 + j * 2 + k == n) {
							//							System.out.println(int(i * 1e4 + j * 1e3 + k * 1e2 + j * 1e1 + i));
							System.out.println(i + "" + j + "" + k + "" + j + "" + i);
						}
					}
				}
			}
		}
		if((n & 1) == 0){
			for(int i = 1; i <= 9; i++) {
				for(int j = 0; j <= 9; j++) {
					for(int k = 0; k <= 9; k++) {
						if(i * 2 + j * 2 + k == n) {
							//							System.out.println(int(i * 1e4 + j * 1e3 + k * 1e2 + j * 1e1 + i));
							System.out.println(i + "" + j + "" + k + "" + j + "" + i);
						}
					}
				}
			}
			for(int i = 1; i <= 9; i++) {
				for(int j = 0; j <= 9; j++) {
					for(int k = 0; k <= 9; k++) {
						if(i * 2 + j * 2 + k * 2 == n) {
							//							System.out.println(int(i * 1e5 + j * 1e4 + k * 1e3 + k * 1e2 + j * 10 + i));							}
							System.out.println(i + "" + j + "" + k + "" + k + "" + j + "" + i);
						}
					}
				}
			}
		}

	}
}