Compilare: user.cpp: In function ‘bool BF(int, int)’: user.cpp:28:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘int Flow(int, int)’: user.cpp:47:6: warning: unused variable ‘F’ [-Wunused-variable] int F=0,Cost=0,Min; ^ user.cpp: In function ‘int main()’: user.cpp:64:35: 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,&M,&S,&D); ^ user.cpp:67:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d%d%d",&X,&Y,&C,&Z); ^