java版

import java.util.Scanner;


public class Main{

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String str = sc.nextLine();
            String[] strs = str.split(" ");
            for(int i = strs.length - 1; i > 0 ; i--){
                System.out.print(strs[i] + " ");
            }
            System.out.print(strs[0]);
        }
    }
}