Compilare: user.cpp: In function ‘int bfs(int)’: user.cpp:29:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf[x].size();i++) ^ user.cpp: In function ‘int determinare()’: user.cpp:54:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graf[node].size();i++) ^ user.cpp:57:17: warning: unused variable ‘kl’ [-Wunused-variable] int kl=dist[x]; ^ user.cpp:52:13: warning: unused variable ‘op’ [-Wunused-variable] int op=dist[node]; ^ user.cpp: In function ‘int bfs(int)’: user.cpp:43:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int determinare()’: user.cpp:72:1: warning: control reaches end of non-void function [-Wreturn-type] } ^