0_0_22417888_19449.cpp:23:45: error: non-member function 'bool operator<(const node&)' cannot have cv-qualifier
friend bool operator<(const node &other)const{
^
0_0_22417888_19449.cpp:23:45: error: 'bool operator<(const node&)' must take exactly two arguments
0_0_22417888_19449.cpp: In function 'int bfs()':
0_0_22417888_19449.cpp:43:11: error: reference to 'next' is ambiguous
x=next.x=now.x+dir[i][0];
^
0_0_22417888_19449.cpp:26:6: note: candidates are: node next
}now,next;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
next(_ForwardIterator __x, typename
^
0_0_22417888_19449.cpp:44:11: error: reference to 'next' is ambiguous
y=next.y=now.y+dir[i][1];
^
0_0_22417888_19449.cpp:26:6: note: candidates are: node next
}now,next;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
next(_ForwardIterator __x, typename
^
0_0_22417888_19449.cpp:52:9: error: reference to 'next' is ambiguous
next.step=now.step+temp;
^
0_0_22417888_19449.cpp:26:6: note: candidates are: node next
}now,next;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
next(_ForwardIterator __x, typename
^
0_0_22417888_19449.cpp:53:17: error: reference to 'next' is ambiguous
pq.push(next);
^
0_0_22417888_19449.cpp:26:6: note: candidates are: node next
}now,next;
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:66:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type)
next(_ForwardIterator __x, typename
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h: In instantiation of 'bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = node]':
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/predefined_ops.h:141:37: required from 'bool __gnu_cxx::__ops::_Iter_comp_val<_Compare>::operator()(_Iterator, _Value&) [with _Iterator = __gnu_cxx::__normal_iterator<node*, std::vector<node, std::allocator<node> > >; _Value = node; _Compare = std::less<node>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_heap.h:129:76: required from 'void std::__push_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<node*, std::vector<node, std::allocator<node> > >; _Distance = long long int; _Tp = node; _Compare = __gnu_cxx::__ops::_Iter_comp_val<std::less<node> >]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_heap.h:201:51: required from 'void std::push_heap(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<node*, std::vector<node, std::allocator<node> > >; _Compare = std::less<node>]'
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_queue.h:502:41: required from 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = node; _Sequence = std::vector<node, std::allocator<node> >; _Compare = std::less<node>; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = node]'
0_0_22417888_19449.cpp:33:15: required from here
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:371:20: error: no match for 'operator<' (operand types are 'const node' and 'const node')
{ return __x < __y; }
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:371:20: note: candidates are:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:220:5: note: template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:220:5: note: template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:371:20: note: 'const node' is not derived from 'const std::pair<_T1, _T2>'
{ return __x < __y; }
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:298:5: note: template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
operator<(const reverse_iterator<_Iterator>& __x,
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:298:5: note: template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:371:20: note: 'const node' is not derived from 'const std::reverse_iterator<_Iterator>'
{ return __x < __y; }
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:348:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
operator<(const reverse_iterator<_IteratorL>& __x,
^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:348:5: note: template argument deduction/substitution failed:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:48:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_function.h:371:20: note: 'const node' is not derived from 'const std::reverse_iterator<_Iterator>'
{ return __x < __y; }
^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algobase.h:67:0,
from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:61,
from 0_0_22417888_19449.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1072:5: note: template<class _IteratorL, class _IteratorR> bool
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