#include <iostream>
#include <vector>
bool checkSum(const std::vector<int>& a, int sum) {
  // put your code here
}

int main() {
  std::vector<int> arr;
  int size;
  std::cout << "Insert vector size ";
  std::cin >> size;
  std::cout << size << std::endl;

  std::cout << "Insert vector elements: ";
  for (int i = 0; i < size; ++i) {
     int in;
     std::cin >> in;
     std::cout << in << " ";
     arr.push_back(in);
  }
  std::cout << std::endl;
  
  int x = 0;
  std::cout << "Insert target sum ";
  std::cin >> x;
  std::cout << x << std::endl;

  // put your code here
}