Compilare: user.cpp: In function ‘bool bfs(int, int)’: user.cpp:33:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<graf[crt].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:63:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<graf[n].size(); i++) ^ user.cpp:57:9: warning: variable ‘s’ set but not used [-Wunused-but-set-variable] int s = graf[n].size(); ^