Compilare: user.cpp: In function ‘void dijsktra(std::vector<std::pair<int, int> >*, int, int*)’: user.cpp:47:13: warning: unused variable ‘d’ [-Wunused-variable] int d = pq.top().x; ^ user.cpp: In function ‘int main()’: user.cpp:62:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.in", "r", stdin); ^ user.cpp:63:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.out", "w", stdout); ^