#include <bits/stdc++.h>

using namespace std;


int main() {
    int n, m;
    cin >> n >> m;
    int ans = 0;
    vector<vector<bool>> v(n + 1, vector<bool>(m + 1));
    for (int i = 1; i <= m; i++) {
        v[1][i] = (i & 1);
    }
    for (int i = 2; i <= n; i++) {
        if (i != n)v[i][m] = ((i + m + 1) & 1);
        else v[i][m] = 1;
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            if (v[i][j])ans++;
        }
    }
    cout << ans << "\n";
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cout << v[i][j] << " ";
        }
        cout << "\n";
    }
    return 0;
}