Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:41:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<G[nod].size(); i++) ^ user.cpp:32:15: warning: unused variable ‘cost’ [-Wunused-variable] int i,nod,cost; ^ user.cpp:33:10: warning: unused variable ‘ok’ [-Wunused-variable] bool ok; ^ user.cpp: In function ‘void citire()’: user.cpp:23:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d %d",&n,&m); ^ user.cpp:26:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin,"%d %d %d",&a,&b,&c); ^