Compilare: main.cpp: In function 'int main()': main.cpp:459:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 459 | for(auto SR : on_path_down(y, l)) ans += SR.count_hits(h); | ^~ main.cpp:459:38: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 459 | for(auto SR : on_path_down(y, l)) ans += SR.count_hits(h); | ^ In file included from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/c++allocator.h:33, from /usr/include/c++/12.2.1/bits/allocator.h:46, from /usr/include/c++/12.2.1/string:41, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/sstream:38, from /usr/include/c++/12.2.1/complex:45, from /usr/include/c++/12.2.1/ccomplex:39, from /usr/include/c++/12.2.1/x86_64-pc-linux-gnu/bits/stdc++.h:54, from main.cpp:5: In member function 'void std::__new_allocator<_Tp>::deallocate(_Tp*, size_type) [with _Tp = std::__detail::_Hash_node<std::pair<const std::pair<Drum::Node*, int>, int>, true>]', inlined from 'constexpr void std::allocator< <template-parameter-1-1> >::deallocate(_Tp*, std::size_t) [with _Tp = std::__detail::_Hash_node<std::pair<const std::pair<Drum::Node*, int>, int>, true>]' at /usr/include/c++/12.2.1/bits/allocator.h:200:35, inlined from 'static constexpr void std::allocator_traits<std::allocator<_CharT> >::deallocate(allocator_type&, pointer, size_type) [with _Tp = std::__detail::_Hash_node<std::pair<const std::pair<Drum::Node*, int>, int>, true>]' at /usr/include/c++/12.2.1/bits/alloc_traits.h:496:23, inlined from 'void std::__detail::_Hashtable_alloc<_NodeAlloc>::_M_deallocate_node_ptr(__node_ptr) [with _NodeAlloc = std::allocator<std::__detail::_Hash_node<std::pair<const std::pair<Drum::Node*, int>, int>, true> >]' at /usr/include/c++/12.2.1/bits/hashtable_policy.h:1995:38, inlined from 'void std::__detail::_Hashtable_alloc<_NodeAlloc>::_M_deallocate_node(__node_ptr) [with _NodeAlloc = std::allocator<std::__detail::_Hash_node<std::pair<const std::pair<Drum::Node*, int>, int>, true> >]' at /usr/include/c++/12.2.1/bits/hashtable_policy.h:1985:29, inlined from 'std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::_Scoped_node::~_Scoped_node() [with _Key = std::pair<Drum::Node*, int>; _Value = std::pair<const std::pair<Drum::Node*, int>, int>; _Alloc = std::allocator<std::pair<const std::pair<Drum::Node*, int>, int> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::pair<Drum::Node*, int> >; _Hash = hops; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>]' at /usr/include/c++/12.2.1/bits/hashtable.h:312:57, inlined from 'std::__detail::_Map_base<_Key, std::pair<const _Key, _Val>, _Alloc, std::__detail::_Select1st, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits, true>::mapped_type& std::__detail::_Map_base<_Key, std::pair<const _Key, _Val>, _Alloc, std::__detail::_Select1st, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits, true>::operator[](key_type&&) [with _Key = std::pair<Drum::Node*, int>; _Val = int; _Alloc = std::allocator<std::pair<const std::pair<Drum::Node*, int>, int> >; _Equal = std::equal_to<std::pair<Drum::Node*, int> >; _Hash = hops; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>]' at /usr/include/c++/12.2.1/bits/hashtable_policy.h:815:5: /usr/include/c++/12.2.1/bits/new_allocator.h:158:33: warning: 'void operator delete(void*, std::size_t)' called on unallocated object 'buf' [-Wfree-nonheap-object] 158 | _GLIBCXX_OPERATOR_DELETE(_GLIBCXX_SIZED_DEALLOC(__p, __n)); | ^ main.cpp: In member function 'std::__detail::_Map_base<_Key, std::pair<const _Key, _Val>, _Alloc, std::__detail::_Select1st, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits, true>::mapped_type& std::__detail::_Map_base<_Key, std::pair<const _Key, _Val>, _Alloc, std::__detail::_Select1st, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits, true>::operator[](key_type&&) [with _Key = std::pair<Drum::Node*, int>; _Val = int; _Alloc = std::allocator<std::pair<const std::pair<Drum::Node*, int>, int> >; _Equal = std::equal_to<std::pair<Drum::Node*, int> >; _Hash = hops; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>]': main.cpp:9:13: note: declared here 9 | static char buf[500 << 20]; | ^~~ In member function 'void std::__new_allocator<_Tp>::deallocate(_Tp*, size_type) [with _Tp = int]', inlined from 'constexpr void std::allocator< <template-parameter-1-1> >::deallocate(_Tp*, std::size_t) [with _Tp = int]' at /usr/include/c++/12.2.1/bits/allocator.h:200:35, inlined from 'static constexpr void std::allocator_traits<std::allocator<_CharT> >::deallocate(allocator_type&, pointer, size_type) [with _Tp = int]' at /usr/include/c++/12.2.1/bits/alloc_traits.h:496:23, inlined from 'constexpr void std::_Vector_base<_Tp, _Alloc>::_M_deallocate(pointer, std::size_t) [with _Tp = int; _Alloc = std::allocator<int>]' at /usr/include/c++/12.2.1/bits/stl_vector.h:387:19, inlined from 'constexpr std::_Vector_base<_Tp, _Alloc>::~_Vector_base() [with _Tp = int; _Alloc = std::allocator<int>]' at /usr/include/c++/12.2.1/bits/stl_vector.h:366:15, inlined from 'constexpr std::vector<_Tp, _Alloc>::~vector() [with _Tp = int; _Alloc = std::allocator<int>]' at /usr/include/c++/12.2.1/bits/stl_vector.h:733:7, inlined from 'int main()' at main.cpp:419:5: /usr/include/c++/12.2.1/bits/new_allocator.h:158:33: warning: 'void operator delete(void*, std::size_t)' called on unallocated object 'buf' [-Wfree-nonheap-object] 158 | _GLIBCXX_OPERATOR_DELETE(_GLIBCXX_SIZED_DEALLOC(__p, __n)); | ^ main.cpp: In function 'int main()': main.cpp:9:13: note: declared here 9 | static char buf[500 << 20]; | ^~~