Compilare: user.cpp: In constructor ‘Flight::Flight(int, int, int, long long int)’: user.cpp:8:14: warning: ‘Flight::d’ will be initialized after [-Wreorder] int tp, ts, d; ^ user.cpp:8:10: warning: ‘int Flight::ts’ [-Wreorder] int tp, ts, d; ^ user.cpp:11:2: warning: when initialized here [-Wreorder] Flight(int tp, int d, int ts, ll cost): tp(tp), d(d), ts(ts), cost(cost) {} ^ user.cpp: In function ‘void dfs(int, int)’: user.cpp:22:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < d[node].size(); i++) ^ user.cpp:26:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < l[node].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:51:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < d[x].size(); j++) ^ user.cpp:34:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("avioane2.in", "r", stdin); ^ user.cpp:35:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("avioane2.out", "w", stdout); ^ user.cpp:36:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &k); ^ user.cpp:38:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &x, &y, &z, &p, &q); ^ user.cpp:45:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^