#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <ciso646>
#include <cmath>
#include <complex>
#include <cstdio>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <utility>
#include <vector>
using namespace std;
typedef long long ll;
const ll mod = 1000000007;
const ll INF = (ll)1000000007 * 1000000007;
typedef pair<int, int> P;
#define rep(i, n) for (int i = 0; i < n; i++)
#define per(i, n) for (int i = n - 1; i >= 0; i--)
#define Rep(i, sta, n) for (int i = sta; i < n; i++)
#define Per(i, sta, n) for (int i = n - 1; i >= sta; i--)
typedef long double ld;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ll, ll> LP;
int dx[8] = {1, -1, 0, 0, 1, 1, -1, -1};
int dy[8] = {0, 0, 1, -1, 1, -1, 1, -1};
template <class T>
using max_heap = priority_queue<T>;
template <class T>
using min_heap = priority_queue<T, vector<T>, greater<>>;

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

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

int h, w;

void solve() {
  cin >> h >> w;
  if (h == 1 || w == 1) {
    cout << 0 << endl;
    rep(i, h) {
      rep(j, w) cout << 0 << " ";
      cout << "" << endl;
    }
    return;
  }
  if (h % 2 == 0 && w % 2 == 0) {
    cout << h * w << endl;
    rep(i, h) {
      rep(j, w) cout << 1 << " ";
      cout << "" << endl;
    }
    return;
  } else if (h % 2 == 1 && w % 2 == 0) {
    cout << (h - 1) * w << endl;
    rep(i, h - 1) {
      rep(j, w) { cout << 1 << " "; }
      cout << "" << endl;
    }
    rep(j, w) cout << 0 << " ";
    cout << "" << endl;
    return;
  } else if (h % 2 == 0 && w % 2 == 1) {
    cout << h * (w - 1) << endl;
    rep(i, h) {
      rep(j, w - 1) { cout << 1 << " "; }
      cout << "0" << endl;
    }
    return;
  }
  cout << h * w - max(h, w) << endl;
  if (h >= w) {
    rep(i, h - w) {
      rep(j, w - 1) cout << 1 << " ";
      cout << 0 << endl;
    }
    rep(i, w) {
      rep(j, w) {
        if (j == w - i - 1)
          cout << 0 << " ";
        else
          cout << 1 << " ";
      }
      cout << "" << endl;
    }
  } else {
    rep(i, h) {
      rep(j, w - h) {
        if (i == h - 1)
          cout << 0 << " ";
        else
          cout << 1 << " ";
      }
      Rep(j, w - h, w) {
        if (j == w - i - 1)
          cout << 0 << " ";
        else
          cout << 1 << " ";
      }
      cout << "" << endl;
    }
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(50);
  solve();
}