#include <algorithm>
#include <string>
#include <vector>
#include <iostream>
using namespace std;

class ReversibleString {
public:
    ReversibleString (){}
    ReversibleString (const string& str){
    s = str;

    }
    string ToString () const {
        return s;
    }
    void Reverse (){
        reverse (s.begin(), s.end());
    }
private:
    string s;
};