package com.javarush.task.task18.task1809;
import java.util.*;
import java.io.*;
/*
Реверс файла
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
FileInputStream in = new FileInputStream(r.readLine());
FileOutputStream out = new FileOutputStream(r.readLine());
while(in.available()>0){
byte[] b = new byte[in.available()];
in.read(b);
for(int i = b.length-1; i>0; i--){
out.write(b[i]);
}
}
in.close();
out.close();
}
}