Compilare: user.cpp: In member function ‘void graph::Dijkstra(int, std::vector<int>&)’: user.cpp:110:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] dist[i] = i == nod ? 0 : INFINIT; ^ user.cpp: In member function ‘double graph::solve(int)’: user.cpp:151:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < *j) { ^ user.cpp: In function ‘int main()’: user.cpp:176:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &N, &M, &nrG); ^ user.cpp:180:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a, &b, &c); ^