Compilare: main.cpp: In member function 'bool graf::bfs(int)': main.cpp:35:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<edges[nod].size();i++) ~^~~~~~~~~~~~~~~~~~ main.cpp: In member function 'void graf::flowmax()': main.cpp:48:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<edges[nodes].size();i++){ ~^~~~~~~~~~~~~~~~~~~~ main.cpp:46:22: warning: unused variable 'l' [-Wunused-variable] int flow=0, i, nod, l=0; ^