#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
using namespace std;
namespace my {
ostream& endl(ostream& stream) { return stream << '\n'; }
}
int main(int argc, char * argv[])
{
cout << "x" << my::endl << "y" << my::endl;
fstream f("ttt",ios::out);
f << my::endl;
stringstream ss;
ss << my::endl;
}
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