import java.util.Scanner;

public class Reverse{ //輸入一個整數然後反轉
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        System.out.println("請輸入一個整數");
        int num = sc.nextInt();

        int result=0;
        for( ; ;){
            int n = num%10;
            result = result*10
 
 + n;
            num = num/10;//降位
            if(num==0){
                break;
            }
        }
        System.out.println(result);
    }   
}