#include <bits/stdc++.h>

using namespace std;

int32_t main() { 
  cin.tie(0)->sync_with_stdio(0);

  int n, m; cin >> n >> m;
  vector<vector<int>> a(n + 1, vector<int>(m + 1));


  for (int i = 2; i <= n; i += 2) a[i][m] = 1;
  if ((n & 1)) a[n][m] = 1;
  for (int j = 1; j <= m; j += 2) a[1][j] = 1;

  int answer = 0;
  for (int i = 1; i <= n; ++i) { 
    for (int j = 1; j <= m; ++j) answer += a[i][j];
  }
  
  cout << answer << "\n";
  for (int i = 1; i <= n; ++i) { 
    for (int j = 1; j <= m; ++j) cout << a[i][j] << " \n"[j == m];
  }
}