#include <bits/stdc++.h>
using namespace std;
int main() {
  int i = 0, j = 0, n, k;
  cin >> n >> k;
  int mat[n][n];
  if (k > n * n) {
    cout << -1;
    return 0;
  }
  for (i = 0; i < n; i++) {
    for (j = 0; j < n; j++) {
      if (j >= i) {
        if (k > 0 && i == j) {
          mat[i][j] = 1;
          k--;
        } else if (k >= 2) {
          mat[i][j] = 1;
          k -= 2;
        } else
          mat[i][j] = 0;
        cout << mat[i][j] << " ";
      } else
        cout << mat[j][i] << " ";
    }
    cout << endl;
  }
  return 0;
}
