Given an array of numbers with N elements. Rewrite even numbers in a new array and find the product of negative ones in it

#include <iostream>
#include <vector>
#include <algorithm>
#include <numeric>

int main() {
  std::vector<int> numbers {1, 2, 3, -4, -5, -6, 7, 8, 9, 10};
  std::vector<int> result;
  
  std::copy_if(numbers.begin(), numbers.end(), std::back_inserter(result), [](int x) { return x % 2 == 0; });
  
  int result2 = std::accumulate(result.begin(), result.end(), 1, std::multiplies<int>());
  
  std::cout << result2;
}