func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   string s;   set<string> aux;   int main() {     scanf( %d , &n);     for (int i = 0; i < n; i++) {       cin >> s;       string ns =   ;       for (int j = 0; j < s.size(); j++) {         if (s[j] ==  u )           ns +=  oo ;         else if (s[j] ==  h ) {           while (!ns.empty() && ns.back() ==  k ) ns.pop_back();           ns += s[j];         } else           ns += s[j];       }       aux.insert(ns);     }     printf( %d n , aux.size());     return 0;   }   