func_code_string: #include <bits/stdc++.h>   using namespace std;   string smallest(string s) {     if (s.length() % 2 == 1) return s;     string s1 = smallest(s.substr(0, s.length() / 2));     string s2 = smallest(s.substr(s.length() / 2));     if (s1 < s2)       return s1 + s2;     else       return s2 + s1;   }   bool solve(string s1, string s2) {     for (int i = 0; i < s1.length(); i++)       if (s1[i] != s2[i]) return 0;     return 1;   }   int main() {     string s1, s2;     cin >> s1 >> s2;     s1 = smallest(s1);     s2 = smallest(s2);     if (solve(s1, s2))       cout <<  YES n ;     else       cout <<  NO n ;   }   