Compilare: main.cpp: In function 'void Unire(int, int)': main.cpp:55:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<conexe[start].size(); i++) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:69:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<conexe[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:67:12: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] extra[x] ++, extra[y] ++; ~~~~~~~^