Compilare: user.cpp: In function ‘bool BFS(int, int)’: user.cpp:27:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[Q.front()].size();i++) ^ user.cpp: In function ‘int Flow(int, int)’: user.cpp:50:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[Destination].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:72:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&N,&M); ^ user.cpp:75:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d%d",&X,&Y,&C); ^