#include <iostream>
#include <string>
#include <vector>
using std::string; using std::vector; using std::cout; using std::cin; using std::endl;
int main ()
{
const vector<string> text;
string words;
while (cin >> words) {
for (auto it = text.cbegin(); it != text.cend() && !it->empty(); ++it);
}
cout << words << endl;
}
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