#include <bits/stdc++.h>

using namespace std;

#define ll long long

int dx[] = {0,0,1,-1};
int dy[] = {1,-1,0,0};

int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int n,m;cin >> n >> m;
	vector<vector<int>> vis(n + 5,vector<int>(m + 5));
	auto r = vis;
	int cnt = 0;
	for (int i = 1;i <= n;i+=2){
		if (!r[i][1])
			cnt++;
		r[i][1] = 1;
	}
	if (n % 2 == 0) r[n][1] = 1,cnt++;
	for (int i = 1;i <= m;i+=2){
		if (!r[1][i])
			cnt++;
		r[1][i] = 1;
	}
	if (m % 2 == 0) r[1][m] = 1,cnt++;
	cout << cnt << endl;
	for (int i = 1;i <= n;i++){
		for (int j = 1;j <= m;j++)
			cout << r[i][j] << " \n"[j == m];
	}

	return 0;
}