#include <iostream>
using namespace std;
 
int main()
{
    setlocale(LC_ALL, "Russian");
    double **a;
    int m,n;
    cout << "Введите m: ";
    cin >> m;
    cout << "Введите n: ";
    cin >> n;
    a = new double *[m];
    double *b1 = new double[m];
    double *b2 = new double[m];
    for (int i=0; i<m; i++)
         a[i] = new double [n];
    for (int i=0; i<m; i++)
        for (int j=0; j<n; j++)
        {
            cout << "Введите a["<<i+1<<","<<j+1<<"]: ";
            cin >> a[i][j];
        }
    for (int i=0; i<m; i++)
    {
        double p=1,s=0;
        for (int j=0; j<n; j++)
        {
            p*=a[i][j];
            s+=a[i][j];
        }
        b1[i]=p;
        b2[i]=s/m;
    }
    double min = b2[0];
    for (int i=0; i<m; i++)
            if (b2[i]<min) min = b2[i];
    cout << "Вектор произведений: " << endl;
    for (int i=0; i<m; i++)
        cout << b1[i] << " ";
    cout << endl << "Наименьшее среднее арифметическое: "<<min;
    for (int i=0; i<m; i++)
        delete [] a[i];
    delete []a;
    delete []b1;
    delete []b2;
}

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3 4 4.55 6.32 18.11 2.5 6 8.97 33.12 16.78 9.44 6.12 9.0 5.55 11.32