Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:19:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vec[nod].size();i++) ^ user.cpp:10:12: warning: variable ‘minim’ set but not used [-Wunused-but-set-variable] {int i,minim,nod; ^ user.cpp: In function ‘int main()’: user.cpp:32:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen("dijkstra.in","r",stdin); ^ user.cpp:33:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.out","w",stdout); ^ user.cpp:35:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:37:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] {scanf("%d%d%d",&x,&y,&c); ^