#include <iostream>
#include <string>
using namespace std;
class Ttekst{
private:
string _t;
public:
void wpisz(string t){_t=t;}
string pobierz(){return _t;}
Ttekst() {_t="nic";}
~Ttekst(){}
};
int main()
{
Ttekst O1, O2;
string txt;
cin>>txt;
O1.wpisz(txt);
O2.wpisz(O2.pobierz()+O1.pobierz());
cout<<O2.pobierz()<<endl;
cin.get();
return 0;
}
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