#include <iostream>
using namespace std;


int Average(int* a, int sizeA, int* b, int sizeB) {
    int sumA = 0;
    int sumB = 0;
    for (size_t i = 0; i < sizeA; i++)
    {
        if (a[i] < 0)
        {
            sumA += a[i];
        }
    }
    for (size_t i = 0; i < sizeB; i++)
    {
        if (b[i] < 0)
        {
            sumB += b[i];
        }
    }

    return sumA * sumB;
}
void Print(int* arr, int size) {
    for (size_t i = 0; i < size; i++)
    {
        cout << arr[i] << " ";
    }
}
int main()
{
    const int sizeA = 10;
    const int sizeB = 15;
    int A[sizeA];

    for (size_t i = 0; i < sizeA; i++)
    {
        cin >> A[i];
    }
    cout << endl;

    Print(A, sizeA);
    cout << endl;

    int B[sizeB];
    for (size_t i = 0; i < sizeB; i++)
    {
        B[i] = 50 - rand() % 100;
    }
    cout << endl;

    Print(B, sizeB);
    cout << endl;
    cout << Average(A, sizeA, B, sizeB);

}