Compilare: user.cpp: In function ‘void init()’: user.cpp:58:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<G[1].size();i++) ^ user.cpp: In function ‘void solve()’: user.cpp:77:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<G[nod_nou].size();i++) ^ user.cpp: In function ‘void write()’: user.cpp:89:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<Solutie.size();i++) ^ user.cpp: In function ‘void read()’: user.cpp:45:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ user.cpp:49:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&x,&y,&c); ^