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View Compilation Error

0_0_14515501_10904.cpp: In function 'long long int calcr(int, int)':
0_0_14515501_10904.cpp:46:23: error: reference to 'next' is ambiguous
  for (i=1;i<=s2[l] && next[l][i][1]<=r;i++)
                       ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp:47:7: error: reference to 'next' is ambiguous
   if (next[l][i+1][1]<=r) ret+=(long long)(next[l][i+1][1]-next[l][i][1])*next[l][i][0];else ret+=(long long)(r-next[l][i][1]+1)*next[l][i][0];
       ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp:47:44: error: reference to 'next' is ambiguous
   if (next[l][i+1][1]<=r) ret+=(long long)(next[l][i+1][1]-next[l][i][1])*next[l][i][0];else ret+=(long long)(r-next[l][i][1]+1)*next[l][i][0];
                                            ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp:47:60: error: reference to 'next' is ambiguous
   if (next[l][i+1][1]<=r) ret+=(long long)(next[l][i+1][1]-next[l][i][1])*next[l][i][0];else ret+=(long long)(r-next[l][i][1]+1)*next[l][i][0];
                                                            ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp:47:75: error: reference to 'next' is ambiguous
   if (next[l][i+1][1]<=r) ret+=(long long)(next[l][i+1][1]-next[l][i][1])*next[l][i][0];else ret+=(long long)(r-next[l][i][1]+1)*next[l][i][0];
                                                                           ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp:47:113: error: reference to 'next' is ambiguous
   if (next[l][i+1][1]<=r) ret+=(long long)(next[l][i+1][1]-next[l][i][1])*next[l][i][0];else ret+=(long long)(r-next[l][i][1]+1)*next[l][i][0];
                                                                                                                 ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp:47:130: error: reference to 'next' is ambiguous
   if (next[l][i+1][1]<=r) ret+=(long long)(next[l][i+1][1]-next[l][i][1])*next[l][i][0];else ret+=(long long)(r-next[l][i][1]+1)*next[l][i][0];
                                                                                                                                  ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:39,
                 from 0_0_14515501_10904.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_14515501_10904.cpp: In function 'int main()':
0_0_14515501_10904.cpp:80:12: error: reference to 'next' is ambiguous
    s2[i]=1;next[i][1][0]=a[i];next[i][1][1]=i;
            ^
0_0_14515501_10904.cpp:12:40: note: candidates are: int next [10011][33][2]
 int pos[maxn],a[maxn],pre[maxn][33][2],next[maxn][33][2],f[maxn][15],s1[maxn],s2[maxn];
                                        ^
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++/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++/ostream:38,


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