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View Compilation Error

0_0_34104269_10251.cpp: In function 'int main()':
0_0_34104269_10251.cpp:143:13: error: reference to 'next' is ambiguous
             next[i] = n + 1;
             ^
0_0_34104269_10251.cpp:53:25: note: candidates are: int next [200010]
 int n, m, a[N], vis[N], next[N];
                         ^
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++/vector:60,
                 from 0_0_34104269_10251.cpp:1:
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_34104269_10251.cpp:150:47: error: reference to 'next' is ambiguous
             if (b[i + 1].first == b[i].first) next[b[i].second] = b[i + 1].second;
                                               ^
0_0_34104269_10251.cpp:53:25: note: candidates are: int next [200010]
 int n, m, a[N], vis[N], next[N];
                         ^
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++/vector:60,
                 from 0_0_34104269_10251.cpp:1:
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_34104269_10251.cpp:160:23: error: reference to 'next' is ambiguous
         a[0] = n + 1; next[0] = n + 1;
                       ^
0_0_34104269_10251.cpp:53:25: note: candidates are: int next [200010]
 int n, m, a[N], vis[N], next[N];
                         ^
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++/vector:60,
                 from 0_0_34104269_10251.cpp:1:
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_34104269_10251.cpp:166:26: error: reference to 'next' is ambiguous
                 int p1 = next[l - 1];
                          ^
0_0_34104269_10251.cpp:53:25: note: candidates are: int next [200010]
 int n, m, a[N], vis[N], next[N];
                         ^
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++/vector:60,
                 from 0_0_34104269_10251.cpp:1:
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_34104269_10251.cpp:174:12: error: expected ';' at end of input
     return 0
            ^
0_0_34104269_10251.cpp:174:12: error: expected '}' at end of input


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