Compilare: main.cpp: In function 'Node* add(Node*, const char*, long long int)': main.cpp:24:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 24 | if(w[0] == '\0') | ^ main.cpp:28:34: warning: array subscript -48 is below array bounds of 'Node* [2]' [-Warray-bounds] 28 | p->sons[w[0] - '0'] = add(p->sons[w[0] - '0'], w + 1, idx); | ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:14:11: note: while referencing 'Node::sons' 14 | Node* sons[2]; | ^~~~ main.cpp:28:27: warning: array subscript -48 is below array bounds of 'Node* [2]' [-Warray-bounds] 28 | p->sons[w[0] - '0'] = add(p->sons[w[0] - '0'], w + 1, idx); | ~~~~~~~~~~~~~~~~~~^ main.cpp:14:11: note: while referencing 'Node::sons' 14 | Node* sons[2]; | ^~~~