Compilare: user.cpp: In function ‘bool bfs()’: user.cpp:148:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[nod].size();j++) ^ user.cpp:139:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j,nod,nod2; ^ user.cpp: In function ‘int ford_fulkerson()’: user.cpp:167:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[t].size();i++) ^ user.cpp: In function ‘void detsol()’: user.cpp:198:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[i].size();j++) ^