func_code_string: #include <bits/stdc++.h>   using namespace std;   signed main() {     std ::ios_base ::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     ;     long long n;     cin >> n;     string s;     cin >> s;     long long a[2] = {0};     for (long long i = 0; i < n; i++) a[s[i] - 48]++;     if (a[0] == a[1]) {       cout <<  2 n  << s[0] <<    ;       for (long long i = 1; i < n; i++) cout << s[i];     } else {       cout <<  1 n  << s;     }   }   