#include<iostream>
using namespace std;
int main()
{
	int j,i, rows, cols;
	cout << "Vvedite stroki i stolbci massiva" << endl;
	cin >> rows;
	cin >> cols;

	int** a = new int* [rows];
	for (int i = 0;i < rows;++i)
	{
		a[i] = new int[cols];

	}
	for (int i = 0;i < rows;++i)
		for (int j = 0; j < cols;++j)
		{
			cin>>a[i][j];

		}

	for (int i = 0;i < rows;++i)
	{
		for (int j = 0;j < cols;++j)
		{
			cout << a[i][j]<<"\t";
		}
		cout << endl;
	}
	double count = 0;
	double sum = 0;
	for (int i = 1; i < rows; i++)
		for (int j = 0; j < i; j++)
		{
			if (a[i][j] % 2==0)
			{
				sum += a[i][j];
				count++;
			}
		}

	sum = sum / count;
	cout << sum;

	for (int i = 0;i < rows;++i)
		delete a[i];
	delete[] a;


}