Compilare: user.cpp: In function ‘void citire()’: user.cpp:46:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vec[X].size(); i++) ^ user.cpp: In function ‘void solve()’: user.cpp:74:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vec[crt.nod].size() && !used[crt.id]; i++) ^ user.cpp:69:9: warning: unused variable ‘nrc’ [-Wunused-variable] int nrc, d; ^ user.cpp:69:14: warning: unused variable ‘d’ [-Wunused-variable] int nrc, d; ^ user.cpp: In function ‘void afisare()’: user.cpp:94:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vec[X].size(); i++) ^