Compilare: user.cpp: In member function ‘int HeavyLight<T, Acc>::DFSJump(int, int)’: user.cpp:159:2: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In instantiation of ‘T HeavyLight<T, Acc>::QueryPath(int, int) [with T = int; Acc = main()::__lambda5]’: user.cpp:196:37: required from here user.cpp:114:7: warning: unused variable ‘lc’ [-Wunused-variable] int lc = GetLCA(a, b); ^ user.cpp: In function ‘int main()’: user.cpp:163:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("heavypath.in", "r", stdin); ^ user.cpp:164:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("heavypath.out", "w", stdout); ^ user.cpp: In member function ‘T HeavyLight<T, Acc>::QueryPath(int, int) [with T = int; Acc = main()::__lambda5]’: user.cpp:130:2: warning: control reaches end of non-void function [-Wreturn-type] } ^