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View Compilation Error

0_0_26617889_12773.cpp: In function 'void solve()':
0_0_26617889_12773.cpp:21:17: error: reference to 'next' is ambiguous
                 next[i][len[i]++] = j;
                 ^
0_0_26617889_12773.cpp:8:15: note: candidates are: int next [1100][1100]
 int dp[L][20],next[L][L],len[L],mem[L][20];
               ^
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_26617889_12773.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_26617889_12773.cpp:57:20: error: reference to 'next' is ambiguous
                 dp[next[j][k]][i] = max(dp[next[j][k]][i],dp[j][i-1]+mem[next[j][k]][i]);
                    ^
0_0_26617889_12773.cpp:8:15: note: candidates are: int next [1100][1100]
 int dp[L][20],next[L][L],len[L],mem[L][20];
               ^
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_26617889_12773.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_26617889_12773.cpp:57:44: error: reference to 'next' is ambiguous
                 dp[next[j][k]][i] = max(dp[next[j][k]][i],dp[j][i-1]+mem[next[j][k]][i]);
                                            ^
0_0_26617889_12773.cpp:8:15: note: candidates are: int next [1100][1100]
 int dp[L][20],next[L][L],len[L],mem[L][20];
               ^
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_26617889_12773.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_26617889_12773.cpp:57:74: error: reference to 'next' is ambiguous
                 dp[next[j][k]][i] = max(dp[next[j][k]][i],dp[j][i-1]+mem[next[j][k]][i]);
                                                                          ^
0_0_26617889_12773.cpp:8:15: note: candidates are: int next [1100][1100]
 int dp[L][20],next[L][L],len[L],mem[L][20];
               ^
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_26617889_12773.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
     ^


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