#include <string>
#include <iostream>
#include <sstream>
#include <set>
 
int main()
{
	std::set<std::string> stringSet;
    std::string line;
    while (std::getline(std::cin, line))
    {
        std::istringstream oneline(line);
        std::string word;
        while (oneline >> word)
        {
           std::cout << word << "\n";
           stringSet.insert(word);
        }
    }
 
    std::cout << "\n\nThere are " << stringSet.size() << " unique words";
}

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this is                                                                                                                                                                                                                                         
        is                                                                                                                                                                                                                                      
a test                                                                                                                                                                                                                                          
test