#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
using ll = long long;
using ld = long double;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int H,W; cin >> H >> W;
    vector<vector<int>> ans(H, vector<int>(W, 0));
    if(H % 2 == 0 || W % 2 == 0) {
        rep(i,H)rep(j,W)if(ans[i][j] == 0 && i + 1 < H && j + 1 < W) {
            ans[i][j] = ans[i + 1][j] = ans[i][j + 1] = ans[i + 1][j + 1] = 1;
        }
    } else {
        rep(i,H)rep(j,W) ans[i][j] = (i != j);
    }
    int cnt = 0;
    rep(i,H)rep(j,W) cnt += ans[i][j];
    cout << cnt << "\n";
    rep(i,H)rep(j,W) cout << ans[i][j] << " \n"[j == W - 1];
}