Eroare de compilare: user.cpp: In function ‘int bfs()’: user.cpp:28:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[node].size(); j++){ ^ user.cpp: In function ‘int main()’: user.cpp:46:5: error: ‘fi’ was not declared in this scope fi = fopen("maxflow.in","r"); ^ user.cpp:47:5: error: ‘fo’ was not declared in this scope fo = fopen("maxflow.out","w"); ^ user.cpp:60:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[n].size(); i++){ ^