Compilare: main.cpp: In function 'void add(int, std::string&, int)': main.cpp:36:34: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | if (tree[node].nxt[toInt[s[ind]]] == 0) | ^ main.cpp:38:32: warning: array subscript has type 'char' [-Wchar-subscripts] 38 | tree[node].nxt[toInt[s[ind]]] = nodes++; | ^ main.cpp:40:34: warning: array subscript has type 'char' [-Wchar-subscripts] 40 | add(tree[node].nxt[toInt[s[ind]]], s, ind + 1); | ^ main.cpp: In function 'void query(int, std::string&)': main.cpp:57:16: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 57 | if (s.size() == k) | ~~~~~~~~~^~~~ main.cpp:64:62: warning: array subscript has type 'char' [-Wchar-subscripts] 64 | if (tree[node].dp == (tree[tree[node].nxt[toInt[toBeaten[c]]]].stop) * | ^ main.cpp:64:63: warning: array subscript has type 'char' [-Wchar-subscripts] 64 | if (tree[node].dp == (tree[tree[node].nxt[toInt[toBeaten[c]]]].stop) * | ~~~~~~~~~~^ main.cpp:66:56: warning: array subscript has type 'char' [-Wchar-subscripts] 66 | tree[tree[node].nxt[toInt[c]]].dp) | ^ main.cpp:71:28: warning: array subscript has type 'char' [-Wchar-subscripts] 71 | if (tree[node].nxt[toInt[res]] == 0) | ^~~ main.cpp:72:26: warning: array subscript has type 'char' [-Wchar-subscripts] 72 | tree[node].nxt[toInt[res]] = nodes++; | ^~~ main.cpp:74:30: warning: array subscript has type 'char' [-Wchar-subscripts] 74 | query(tree[node].nxt[toInt[res]], s); | ^~~