Compilare: main.cpp: In member function 'void Trie::insert(const std::string&, int)': main.cpp:23:33: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | if(!trie[node].next[ch]){ | ^~ main.cpp:24:33: warning: array subscript has type 'char' [-Wchar-subscripts] 24 | trie[node].next[ch] = trie.size(); | ^~ main.cpp:27:36: warning: array subscript has type 'char' [-Wchar-subscripts] 27 | node = trie[node].next[ch]; | ^~ main.cpp: In member function 'void Trie::erase(const std::string&)': main.cpp:36:36: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | node = trie[node].next[ch]; | ^~ main.cpp:42:38: warning: array subscript has type 'char' [-Wchar-subscripts] 42 | if(!trie[trie[node].next[ch]].lvs){ | ^~ main.cpp:43:33: warning: array subscript has type 'char' [-Wchar-subscripts] 43 | trie[node].next[ch] = 0; | ^~ main.cpp:46:36: warning: array subscript has type 'char' [-Wchar-subscripts] 46 | node = trie[node].next[ch]; | ^~ main.cpp: In member function 'void Trie::count(int, int)': main.cpp:52:41: warning: array subscript has type 'char' [-Wchar-subscripts] 52 | if(!trie[node].next[str[ind]]) | ^ main.cpp:54:44: warning: array subscript has type 'char' [-Wchar-subscripts] 54 | node = trie[node].next[str[ind]]; | ^