Compilare: main.cpp: In function 'void DFS(int)': main.cpp:15:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Muchii[nod].size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:48:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < Muchii[nod].size(); ++j) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:67:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < Muchii2[nod].size(); ++j) ~~^~~~~~~~~~~~~~~~~~~~~