#include <bits/stdc++.h>

using i64 = long long;

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

	int n, m;
	std::cin >> n >> m;

	int min = std::min(n, m);
	int max = std::max(n, m);

	std::vector a(min, std::vector<int>(max));

	int delta = max - min;
	for (int i = 0; i < min; i++) {
		a[i][i] = 1;
	}

	if (delta % 2 == 0) {
		for (int i = min + 1; i < max; i += 2) {
			a[0][i] = 1;
		}
	} else {
		for (int i = min + 1; i < max; i += 2) {
			a[0][i] = 1;
		}
		a[0][max - 1] = 1;
	}

	int ans = 0;
	for (int i = 0; i < min; i++) {
		for (int j = 0; j < max; j++) {
			ans += a[i][j];
		}
	}

	std::cout << ans << "\n";

	if (n <= m) {
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				std::cout << a[i][j] << " \n"[j == m - 1];
			}
		}
	} else {
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				std::cout << a[j][i] << " \n"[j == m - 1];
			}
		}

	}

	return 0;
}