#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  vector<int> a(n), b(n);
  for (int i = 0; i < n; ++i) cin >> a[i];
  iota(b.begin(), b.end(), 0);
  sort(b.begin(), b.end(), [&](int i, int j) { return a[i] < a[j]; });
  vector<vector<int>> c(n + 1);
  for (int i = 0; i <= n; ++i) c[i].resize(n);
  for (int i = 0; i < n; ++i)
    for (int j = 0; j < a[b[i]]; ++j) c[(n + 1 + i - j) % (n + 1)][b[i]] = 1;
  cout << n + 1 << "\n";
  for (int i = 0; i < n + 1; ++i, cout << "\n")
    for (int j = 0; j < n; ++j) cout << c[i][j];
  return 0;
}
