#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")


#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n) - 1; i >= 0; i--)
#define repk(i, k, n) for (int i = k; i < (int)(n); i++)
#define all(v) v.begin(), v.end()
#define mod1 1000000007
#define mod2 998244353
#define mod3 100000007
#define vi vector<int>
#define vs vector<string>
#define vc vector<char>
#define vl vector<ll>
#define vb vector<bool>
#define vvi vector<vector<int>>
#define vvc vector<vector<char>>
#define vvl vector<vector<ll>>
#define vvb vector<vector<bool>>
#define vvvi vector<vector<vector<int>>>
#define vvvl vector<vector<vector<ll>>>
#define pii pair<int,int>
#define pil pair<int,ll>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define vpii vector<pair<int,int>>
#define vpll vector<pair<ll,ll>>
#define vvpii vector<vector<pair<int,int>>>
#define vvpll vector<vector<pair<ll,ll>>>

template<typename T> void debug(T e){
    cerr << e << endl;
}

template<typename T> void debug(vector<T> &v){
    rep(i, v.size()){
        cerr << v[i] << " ";
    }
    cerr << endl;
}

template<typename T> void debug(vector<vector<T>> &v){
    rep(i, v.size()){
        rep(j, v[i].size()){
            cerr << v[i][j] << " ";
        }
        cerr << endl;
    }
}

template<typename T> void debug(vector<pair<T, T>> &v){
    rep(i,v.size()){
        cerr << v[i].first << " " << v[i].second << endl;
    }
}

template<typename T> void debug(set<T> &st){
    for (auto itr = st.begin(); itr != st.end(); itr++){
        cerr << *itr << " ";
    }
    cerr << endl;
}

template<typename T> void debug(multiset<T> &ms){
    for (auto itr = ms.begin(); itr != ms.end(); itr++){
        cerr << *itr << " ";
    }
    cerr << endl;
}

template<typename T> void debug(map<T, T> &mp){
    for (auto itr = mp.begin(); itr != mp.end(); itr++){
        cerr << itr->first << " " << itr->second << endl;
    }
}

void debug_out(){
    cerr << endl;
}

template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
    cerr << H << " ";
    debug_out(T...);
}

int main(){
    int H, W;
    cin >> H >> W;
    if (H == 1 || W == 1){
        cout << 0 << endl;
        for (int i = 0; i < H; i++){
            for (int j = 0; j < W; j++){
                cout << 0;
                if (j != W - 1) cout << " ";
            }
            cout << endl;
        }
    }
    else if (H % 2 == 0 && W % 2 == 0){
        cout << H * W << endl;
        for (int i = 0; i < H; i++){
            for (int j = 0; j < W; j++){
                cout << 1;
                if (j != W - 1) cout << " ";
            }
            cout << endl;
        }
    }
    else if (H % 2 == 0 && W % 2 == 1){
        cout << H * (W - 1) << endl;
        for (int i = 0; i < H; i++){
            for (int j = 0; j < W; j++){
                if (j == W - 1){
                    cout << 0;
                }
                else{
                    cout << 1 << " ";
                }
            }
            cout << endl;
        }
    }
    else if (H % 2 == 1 && W % 2 == 0){
        cout << (H - 1) * W << endl;
        for (int i = 0; i < H; i++){
            for (int j = 0; j < W; j++){
                if (i == H - 1){
                    cout << 0;
                }
                else{
                    cout << 1;
                }
                if (j != W - 1) cout << " ";
            }
            cout << endl;
        }
    }
    else{
        vvi ans(H, vi(W, 1));
        int min_val = min(H, W);
        for (int i = 0; i <= min_val - 1; i++){
            ans[H - 1 - i][W - (min_val - i)] = 0;
        }
        for (int i = 0; i < H - 1; i++){
            if (ans[i][W - 1] == 0) break;
            ans[i][W - 1] = 0;
        }
        for (int j = 0; j < W - 1; j++){
            if (ans[H - 1][j] == 0) break;
            ans[H - 1][j] = 0;
        }
        int cnt = 0;
        rep(i,H){
            rep(j,W){
                cnt += ans[i][j];
            }
        }
        cout << cnt << endl;
        for (int i = 0; i < H; i++){
            for (int j = 0; j < W; j++){
                cout << ans[i][j];
                if (j < W - 1) cout << " ";
            }
            cout << endl;
        }
    }
}