#include <iostream>

#include <vector>

#include <algorithm>

using namespace std;

​

int main() {

  vector<int> numbers = {1, 7, 3, 5, 9, 2};

  sort(numbers.begin(), numbers.end());

  if (binary_search(numbers.begin(), numbers.end(), 5)) {

    cout << "The number 5 was found!";

  } else {

    cout << "The number 5 was not found.";

  }

  return 0;

}

​