Compilare: main.cpp: In function 'void bfs(int)': main.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < l[el].size(); i++) { ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:73:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < CompT_Conex[compCon[i]].size(); ++k) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:81:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < allPopNumbers.size(); ++i) fout << allPopNumbers[i] << " "; ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int DFS(int)': main.cpp:88:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < l[Nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:95:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int DFS_T(int)': main.cpp:101:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < GT[Nod].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:108:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^