Compilare: user.cpp: In function ‘bool BFS(short int, short int)’: user.cpp:28:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short i=0;i<Graph[x].size();i++) ^ user.cpp: In function ‘short int Flow(short int, short int)’: user.cpp:45:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short i=0;i<Graph[end].size();i++) ^ user.cpp:52:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cap[father[j]][j]-flow[father[j]][j]<Add) ^ user.cpp:52:56: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cap[father[j]][j]-flow[father[j]][j]<Add) ^ user.cpp:58:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] flow[father[j]][j]++,flow[j][father[j]]--; ^ user.cpp:58:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] flow[father[j]][j]++,flow[j][father[j]]--; ^ user.cpp: In function ‘int main()’: user.cpp:70:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%hd%hd%hd%hd",&N,&M,&S,&D); ^ user.cpp:80:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%hd%hd",&X,&Y); ^