Compilare: user.cpp: In function ‘int bellmanFord(std::vector<std::list<std::pair<int, int> > >, int, int, std::vector<std::pair<int, int> >&)’: user.cpp:45:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k; ^ user.cpp: In function ‘int main()’: user.cpp:124:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &noduri); ^ user.cpp:128:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &muchii); ^ user.cpp:139:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &v1, &v2, &weight); ^