Compilare: main.cpp: In function 'int BFS(int)': main.cpp:77:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp:69:11: warning: unused variable 'j' [-Wunused-variable] int i,j,nod,nod2; ^ main.cpp: In function 'void Flux()': main.cpp:98:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<vt.size(); i++) ~^~~~~~~~~~ main.cpp:93:30: warning: variable 'pas' set but not used [-Wunused-but-set-variable] int i,flux,aux,sol=0,nod,pas=0; ^~~ main.cpp: In function 'void Solve()': main.cpp:135:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[i].size(); j++) ~^~~~~~~~~~~~