#include <bits/stdc++.h>
using namespace std;

void debug(const char *msg, ...) {
#ifdef CLESIP
    va_list arg;
    static char pbString[512];
    va_start(arg,msg);
    vsprintf(pbString,msg,arg);
    cerr << "[DEBUG] " << pbString << "\n";
    va_end(arg);
#endif    
}

#define PASSED debug("PASSED (%s) LINE #%s", __FUNCTION__, __LINE__)

using i64 = long long;
using i128 = __int128_t;
template <typename T, typename L> void chkmax(T &x, L y) { if (x < y) x = y; }
template <typename T, typename L> void chkmin(T &x, L y) { if (x > y) x = y; }

void solve() {
	int n, m; cin >> n >> m;
	vector<vector<int>> a(n + 1, vector<int>(m + 1));

	for (int i = 1; i <= min(n, m); i ++)
		a[i][i] = 1;
	for (int i = min(n, m); i <= max(n, m); i += 2)
		a[min(n, i)][min(m, i)] = 1;
	a[n][m] = 1;

	int cnt = 0;
	for (int i = 1; i <= n; i ++)
		for (int j = 1; j <= m; j ++)
			cnt += a[i][j];

	cout << cnt << "\n";
	for (int i = 1; i <= n; i ++)
		for (int j = 1; j <= m; j ++)
			cout << a[i][j] << " \n"[j == m];
}

signed main() {
	ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
	solve();
	return 0;
}