void ex2() {
	int a, b, m, n, k = 0;

	cout << "Кол-во элементов \n ->";
	cin >> m >> n;
	int** arr = new int*[m];

	for (int i = 0; i < n; i++) {
		arr[i] = new int[n];
	}
	cout << " элементы \n ->";

	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cin >> arr[i][j];
		}
	}
	cout << "Ваш массив :" << endl;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < m; j++) {
			cout << arr[i][j] << " ";
		}
		cout << endl;
	}

	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (arr[i][j]){

			}
		}
	}



}