Compilare: main.cpp: In function 'void DFS(int)': main.cpp:30:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < v[nod].size();i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void DFS2(int)': main.cpp:52:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < inv[nod].size();i++){ ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:110:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j < ctc[i].size();j++){ ~~^~~~~~~~~~~~~~~