Compilare: user.cpp: In function ‘void DFS(int*, int, int)’: user.cpp:19:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘void Get_Road(int)’: user.cpp:25:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘bool CanBackoff()’: user.cpp:38:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Graph[L[i]].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:48:20: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d",&T); ^ user.cpp:54:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d%d%d",&N,&D,&C,&V); ^ user.cpp:58:71: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&X,&Y),Graph[X].push_back(Y),Graph[Y].push_back(X); ^