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View Compilation Error

0_0_38639930_948.cpp: In function 'void unint(int)':
0_0_38639930_948.cpp:15:18: error: reference to 'size' is ambiguous
         pre[i]=i,size[i]=1;
                  ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:51,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_38639930_948.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:252:5: note: candidates are: 'template<class _Tp, long long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
     size(const _Tp (&/*__array*/)[_Nm]) noexcept
     ^~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:242:5: note:                 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
     ^~~~
0_0_38639930_948.cpp:4:26: note:                 'int size [30005]'
 int pre[mxn],height[mxn],size[mxn];
                          ^~~~
0_0_38639930_948.cpp: In function 'void move(int, int)':
0_0_38639930_948.cpp:22:19: error: reference to 'size' is ambiguous
         height[x]=size[y];
                   ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:51,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_38639930_948.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:252:5: note: candidates are: 'template<class _Tp, long long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
     size(const _Tp (&/*__array*/)[_Nm]) noexcept
     ^~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:242:5: note:                 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
     ^~~~
0_0_38639930_948.cpp:4:26: note:                 'int size [30005]'
 int pre[mxn],height[mxn],size[mxn];
                          ^~~~
0_0_38639930_948.cpp:23:9: error: reference to 'size' is ambiguous
         size[y]+=size[x];
         ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:51,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_38639930_948.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:252:5: note: candidates are: 'template<class _Tp, long long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
     size(const _Tp (&/*__array*/)[_Nm]) noexcept
     ^~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:242:5: note:                 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
     ^~~~
0_0_38639930_948.cpp:4:26: note:                 'int size [30005]'
 int pre[mxn],height[mxn],size[mxn];
                          ^~~~
0_0_38639930_948.cpp:23:18: error: reference to 'size' is ambiguous
         size[y]+=size[x];
                  ^~~~
In file included from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/string:51,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/locale_classes.h:40,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/ios_base.h:41,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ios:42,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/istream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/sstream:38,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/complex:45,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/ccomplex:39,
                 from gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/x86_64-w64-mingw32/bits/stdc++.h:52,
                 from 0_0_38639930_948.cpp:1:
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:252:5: note: candidates are: 'template<class _Tp, long long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
     size(const _Tp (&/*__array*/)[_Nm]) noexcept
     ^~~~
gcc-8.5.0/lib/gcc/x86_64-w64-mingw32/8.5.0/include/c++/bits/range_access.h:242:5: note:                 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
     ^~~~
0_0_38639930_948.cpp:4:26: note:                 'int size [30005]'
 int pre[mxn],height[mxn],size[mxn];
                          ^~~~


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