#include <bits/stdc++.h>   using namespace std;   int main() {     cin.tie(0);     ios::sync_with_stdio(false);     cout << setprecision(12);     int l;     cin >> l;     string s;     cin >> s;     size_t t = 0;     for (auto c : s) t += (c ==  1 );     if (t * 2 == s.length()) {       cout << 2 << endl;       cout << s[0] <<     << s.substr(1) << endl;     } else {       cout << 1 << endl;       cout << s << endl;     }   }   