#include <iostream>
#include <algorithm>
#include <iomanip>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <tuple>
#include <cmath>
#include <numeric>
#include <functional>
#include <cassert>

#define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl;
#define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl;

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

using namespace std;
typedef long long ll;

template<typename T>
vector<vector<T>> vec2d(int n, int m, T v){
    return vector<vector<T>>(n, vector<T>(m, v));
}

template<typename T>
vector<vector<vector<T>>> vec3d(int n, int m, int k, T v){
    return vector<vector<vector<T>>>(n, vector<vector<T>>(m, vector<T>(k, v)));
}

template<typename T>
void print_vector(vector<T> v, char delimiter=' '){
    if(v.empty()) {
        cout << endl;
        return;
    }
    for(int i = 0; i+1 < v.size(); i++) cout << v[i] << delimiter;
    cout << v.back() << endl;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << setprecision(10) << fixed;
    int h, w; cin >> h >> w;
    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 << ' ';
            }
            cout << endl;
        }
        return 0;
    }
    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-1; j++){
                cout << 1 << ' ';
            }
            cout << 0 << endl;
        }
        return 0;
    }
    if(h%2 == 1 && w%2 == 0){
        cout << (h-1)*w << endl;
        for(int i = 0; i < h-1; i++){
            for(int j = 0; j < w; j++){
                cout << 1 << ' ';
            }
            cout << endl;
        }
        for(int j = 0; j < w; j++) cout << 0 << ' ';
        cout << endl;
        return 0;
    }
    cout << (h*w)-max(h, w) << endl;
    auto ans = vec2d(h, w, 1);
    for(int i = 0; i < min(h, w); i++) ans[i][i] = 0;
    if(h > w){
        for(int i = w; i < h; i++) ans[i][w-1] = 0;
    }else{
        for(int j = h; j < w; j++) ans[h-1][j] = 0;
    }
    for(int i = 0; i < h; i++) print_vector(ans[i]);
}