In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/hashtable.h:35:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/unordered_map:47,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:115,
from 1_781_5368_3253.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/hashtable_policy.h: In instantiation of 'struct std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > >':
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:134:12: required from 'struct std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > >'
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:145:38: required from 'struct std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:95:63: required from 'class std::unordered_set<std::pair<int, int> >'
1_781_5368_3253.cpp:8:32: required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/hashtable_policy.h:85:33: error: no match for call to '(const std::hash<std::pair<int, int> >) (const std::pair<int, int>&)'
noexcept(declval<const _Hash&>()(declval<const _Key&>()))>
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:64,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/char_traits.h:39,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ios:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/istream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/sstream:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/complex:45,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/ccomplex:38,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
from 1_781_5368_3253.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits: In instantiation of 'struct std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >':
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:95:63: required from 'class std::unordered_set<std::pair<int, int> >'
1_781_5368_3253.cpp:8:32: required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:145:38: error: 'value' is not a member of 'std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > >'
: public integral_constant<bool, !_Pp::value>
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/unordered_set:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:116,
from 1_781_5368_3253.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h: In instantiation of 'class std::unordered_set<std::pair<int, int> >':
1_781_5368_3253.cpp:8:32: required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:95:63: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef __uset_hashtable<_Value, _Hash, _Pred, _Alloc> _Hashtable;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:102:45: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::key_type key_type;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:103:47: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::value_type value_type;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:104:43: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::hasher hasher;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:105:46: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::key_equal key_equal;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:106:51: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::allocator_type allocator_type;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:111:45: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::pointer pointer;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:112:50: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::const_pointer const_pointer;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:113:47: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::reference reference;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:114:52: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::const_reference const_reference;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:115:46: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::iterator iterator;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:116:51: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::const_iterator const_iterator;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:117:51: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::local_iterator local_iterator;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:118:57: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::const_local_iterator const_local_iterator;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:119:47: error: 'value' is not a member of 'std::__not_<std::__and_<std::__is_fast_hash<std::hash<std::pair<int, int> > >, std::__detail::__is_noexcept_hash<std::pair<int, int>, std::hash<std::pair<int, int> > > > >'
typedef typename _Hashtable::size_type size_type;
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/unordered_set.h:120:52: error: 'value' is not a member o
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