#include <ctime>
#include <iostream>
using namespace std;

int main() {
  srand(time(0));
  const int n = 10;
  int array[n], negativePos = -1;
  long long int y = 0, temp = 1; // long long нужен, чтобы хранить большое значение

  for (int i = 0; i < n; i++) {
    array[i] = rand() % 100 - 20; // Левая граница: (0-20) , Правая граница: (100 -20)
  }

  cout << "Your array is:" << endl;
  for (int i = 0; i < n; i++) {
    cout << array[i] << " ";
  }

  for (int i = 0; i < n && negativePos == -1; i++) {
    if (array[i] < 0) {
      negativePos = i + 1;
      cout << endl
           << "Negative number is found on " << i << "th position" << endl;
    }
  }
  if (negativePos == -1) {
    cout << endl << "Negative number is not found" << endl;
    negativePos = n;
  }

  for (int i = 0; i < negativePos; i++) {
    temp *= array[i];
    y += temp;
  }

  cout << "Y = " << y;
  return 0;
}