Compilare: user.cpp: In function ‘int BFS()’: user.cpp:41:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < muchii[nod].size (); j++) ^ user.cpp: In function ‘void Bag_flux()’: user.cpp:57:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < muchii[N].size (); i++) ^ user.cpp: In function ‘void BF1()’: user.cpp:86:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < muchii[nod].size (); j++) ^ user.cpp: In function ‘void BF2()’: user.cpp:105:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < muchii[nod].size (); j++) ^ user.cpp: In function ‘void Scriere()’: user.cpp:119:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G1.size (); i++) ^ user.cpp:122:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < G2.size (); j++) ^ user.cpp:130:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Ans.size (); i++) ^