#include <iostream>

using namespace std;

int main()
{
	setlocale(0, "");
	int n, m, k, a, l = 1, s = 0;
	cout << "m="; cin >> m;
	cout << "k="; cin >> k;
	n = m * k;
	int** arr = new int* [n];
	for (int i = 0; i < m; i++)
	{
		arr[i] = new int[k];
	}
	for (int i = 0; i < m; i++)
		for (int j = 0; j < k; j++)
			arr[i][j] = 0;

	while (s < k)
	{
		if (s % 2 == 0)
		{
			for (int i = 0; i < m; i++)
			{
				arr[i][s] = l;
				l++;
			}
		}
		else
			if (s % 2 != 0)
			{
				for (int i = m; i > 0; i--)
				{
					arr[i - 1][s] = l;
					l++;
				}
			}
		s++;
	}

	for (int i = 0; i < m; i++)
	{
		for (int j = 0; j < k; j++)
		{
			cout << arr[i][j] << "\t";
		}
		cout << "\n";
	}
	for (int i = 0; i < n; i++)
	{
		delete[] arr[i];
	}
	delete[] arr;
}