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View Compilation Error

0_0_33261276_4823.cpp: In function 'int cmp(point, point)':
0_0_33261276_4823.cpp:15:17: error: no match for 'operator-' (operand types are 'point' and 'point')
     double x=X(a-p[1],b-p[1]); 
                 ^
0_0_33261276_4823.cpp:15:17: note: candidates are:
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:328:5: note: template<class _Iterator> typename std::reverse_iterator<_Iterator>::difference_type 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:328:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:21: note:   'point' is not derived from 'const std::reverse_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                     ^
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:380:5: note: template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) 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:380:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:21: note:   'point' is not derived from 'const std::reverse_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                     ^
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1121:5: note: template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator-(const move_iterator<_IteratorL>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1121:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:21: note:   'point' is not derived from 'const std::move_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                     ^
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1128:5: note: template<class _Iterator> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator-(const move_iterator<_Iterator>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1128:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:21: note:   'point' is not derived from 'const std::move_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/random.h:34,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:49,
                 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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:208:3: note: std::ptrdiff_t std::operator-(const std::_Bit_iterator_base&, const std::_Bit_iterator_base&)
   operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
   ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:208:3: note:   no known conversion for argument 1 from 'point' to 'const std::_Bit_iterator_base&'
0_0_33261276_4823.cpp:15:24: error: no match for 'operator-' (operand types are 'point' and 'point')
     double x=X(a-p[1],b-p[1]); 
                        ^
0_0_33261276_4823.cpp:15:24: note: candidates are:
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:328:5: note: template<class _Iterator> typename std::reverse_iterator<_Iterator>::difference_type 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:328:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:28: note:   'point' is not derived from 'const std::reverse_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                            ^
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:380:5: note: template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) 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:380:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:28: note:   'point' is not derived from 'const std::reverse_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                            ^
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1121:5: note: template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_Iterator>&, const std::move_iterator<_IteratorR>&)
     operator-(const move_iterator<_IteratorL>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1121:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:28: note:   'point' is not derived from 'const std::move_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                            ^
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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1128:5: note: template<class _Iterator> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&)
     operator-(const move_iterator<_Iterator>& __x,
     ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_iterator.h:1128:5: note:   template argument deduction/substitution failed:
0_0_33261276_4823.cpp:15:28: note:   'point' is not derived from 'const std::move_iterator<_Iterator>'
     double x=X(a-p[1],b-p[1]); 
                            ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:65:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/random.h:34,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:49,
                 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_33261276_4823.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:208:3: note: std::ptrdiff_t std::operator-(const std::_Bit_iterator_base&, const std::_Bit_iterator_base&)
   operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
   ^
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_bvector.h:208:3: note:   no known conversion for argument 1 from 'point' to 'const std::_Bit_iterator_base&'
0_0_33261276_4823.cpp: In function 'double multi(point, point, point)':
0_0_33261276_4823.cpp:23:16: error: no match for 'operator-' (operand types are 'point' and 'point')
     return X(p2-p1,p3-p1);
                ^
0_0_33261276_4823.cpp:23:16: note: candidates are:
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_33261276_4823.cpp:3:
D:/HDOJ/C


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