#include <set>
#include <string>
#include <iostream>

template<typename T>
void print(std::set<T> s) {
  for(auto it = s.cbegin(); it!=s.cend(); it++) 
    std::cout << *it << " ";
  std::cout << std::endl;
}

int main(int argc, char *argv[]) {
  std::set<std::string> strset;
  
  strset.emplace("orange");
  strset.emplace("apple");
  strset.emplace("mango");
  strset.emplace("cherry");
  strset.emplace("melon");
  strset.emplace("apricot");
  strset.emplace("pineapple");
  strset.emplace("mango");
  strset.emplace("apricot");
  strset.emplace("apple");
  strset.emplace("apple");
  
  print(strset);
  
  return 0;
}