Compilare: main.cpp: In lambda function: main.cpp:27:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short i = 0; i < v[k].size(); ++i) { ~~^~~~~~~~~~~~~ main.cpp:29:27: warning: array subscript has type 'char' [-Wchar-subscripts] if(curr->nxt[c] == 0) { ^ main.cpp:30:28: warning: array subscript has type 'char' [-Wchar-subscripts] curr->nxt[c] = new Node(); ^ main.cpp:32:31: warning: array subscript has type 'char' [-Wchar-subscripts] curr = curr->nxt[c]; ^ main.cpp: In lambda function: main.cpp:42:37: warning: array subscript has type 'char' [-Wchar-subscripts] if(i <= j && curr->nxt[c]) { ^ main.cpp:43:35: warning: array subscript has type 'char' [-Wchar-subscripts] curr = curr->nxt[c]; ^ main.cpp: In function 'int main()': main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < S.size(); ++i) ~~^~~~~~~~~~ main.cpp:58:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 0; i < S.size(); ++i) ^~~ main.cpp:60:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' ofstream fout("seti.out"); ^~~~~~~~