#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int x = 0, y = 0;
  char s[n];
  for (int i = 0; i < n; i++) {
    cin >> s[i];
    if (s[i] == '0')
      y++;
    else
      x++;
  }
  if (x == y) {
    cout << "2" << endl << s[0] << " ";
    for (int i = 1; i < n; i++) cout << s[i];
  } else {
    cout << "1" << endl;
    for (int i = 0; i < n; i++) cout << s[i];
  }
  return 0;
}
