// Copyright 2021 Jeisson Hidalgo <jeisson.hidalgo@ucr.ac.cr> CC-BY 4.0
#include <omp.h>
#include <iostream>

int main(int argc, char* argv[]) {
  const int thread_count = argc >= 2 ? atoi(argv[1]) : omp_get_max_threads();
  std::string word;

  #pragma omp parallel num_threads(thread_count) \
      default(none) shared(std::cin, std::cout, word)
  #pragma omp single
  {
    // First task: read and print first word of the sentence
    std::cin >> word;
    #pragma omp task untied if(false) \
        default(none) shared(std::cout) firstprivate(word)
    std::cout << word;

    // Second task: shuffle remaining words of the sentence
    while (std::cin >> word) {
      #pragma omp task untied default(none) shared(std::cout) firstprivate(word)
      std::cout << ' ' + word;
    }

    // Third task: finish the sentence
    #pragma omp taskwait
    #pragma omp task untied default(none) shared(std::cout)
    std::cout << '.' << std::endl;
  }
}