#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n, m;
	cin >> n >> m;
	int ans = n / 2 + 1 + m / 2;
	if (n == 1 && m == 1)
	{
		cout << 1 << endl;
		cout << 1 << endl;
		return 0;
	}
	if (n == 2&&m==2)
	{
		cout << 2 << endl;
		cout << 1 <<' ' << 0 << endl;
		cout << 0 <<' ' << 1 << endl;
		return 0;
	}
	if (m == 2)
	{
		if (n == 1)
		{
			cout << 2 << endl;
			cout << 1 <<' ' << 1 << endl;
			return 0;
		}
		else
		{
			int ans = 2 + (n - 1) / 2;
			cout << ans << endl;
			cout << 1<<' ' << 0 << endl;
			cout << 0<<" "<<1 << endl;
			for (int i = 3; i <= n; i++)
			{
				if (i == n && i & 1)
				{
					cout << 1<<' '<<0 << endl;
					continue;
				}
				for (int j = 1; j <= m; j++)
				{
					if (i % 2 == 0 && j == 1) cout << 1<<' ';
					else cout << 0<<' ';
				}
				cout << endl;
			}
		}
		return 0;
	}
	cout << ans << endl;
	for (int i = 1; i <= m; i++)
	{
		if (i == m)
		{
			cout << 1 << endl;
			continue;
		}
		if (i & 1) cout << 1<<' ';
		else cout << 0<<' ';
	}
	for (int i = 2; i <= n; i++)
	{
		if (i == n && i % 2 == 0)
		{
			for (int j = 1; j <= m; j++)
			{
				if (j == 1) cout << 1<<' ';
				else cout << 0<<' ';
			}
			cout << endl;
			continue;
		}
		for (int j = 1; j <= m; j++)
		{
			if (i & 1 && j == 1) cout << 1<<' ';
			else cout << 0<<' ';
		}
		cout << endl;
	}
	return 0;
}