Compilare: user.cpp: In function ‘bool BF(int, int)’: user.cpp:52:34: 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:71:6: warning: unused variable ‘F’ [-Wunused-variable] int F=0,Cost=0,Min; ^ user.cpp: In function ‘int main()’: user.cpp:88:19: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(f,1,MAX,IN); ^ user.cpp: In function ‘void Read(int&)’: user.cpp:30:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(f,MAX,1,IN),pos=0; ^ user.cpp:36:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(f,MAX,1,IN),pos=0; ^