题解 | 小红的排列构造

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a = in.nextInt();
        if(a==1||a==2){
            System.out.println("-1");
        }else{
            for(int i=3;i>0;i--){
                System.out.print(i+" ");
            }
            for(int i=4;i<=a;i++){
                System.out.print(i+" ");
            }
        }
    }
}