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View Compilation Error

0_0_21806874_5454.cpp: In function 'int find(int)':
0_0_21806874_5454.cpp:40:21: error: reference to 'hash' is ambiguous
  return lower_bound(hash, hash + hn, x) - hash;
                     ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp:40:27: error: reference to 'hash' is ambiguous
  return lower_bound(hash, hash + hn, x) - hash;
                           ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp:40:43: error: reference to 'hash' is ambiguous
  return lower_bound(hash, hash + hn, x) - hash;
                                           ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp: In member function 'void Node::gao(double, double)':
0_0_21806874_5454.cpp:60:19: error: reference to 'hash' is ambiguous
   s += (a + b) * (hash[r + 1] - hash[l]) / 2;
                   ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp:60:33: error: reference to 'hash' is ambiguous
   s += (a + b) * (hash[r + 1] - hash[l]) / 2;
                                 ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp: In function 'void pushdown(int)':
0_0_21806874_5454.cpp:78:14: error: reference to 'hash' is ambiguous
  double h1 = hash[node[lson(x)].r + 1] - hash[node[lson(x)].l];
              ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp:78:42: error: reference to 'hash' is ambiguous
  double h1 = hash[node[lson(x)].r + 1] - hash[node[lson(x)].l];
                                          ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp:79:14: error: reference to 'hash' is ambiguous
  double h2 = hash[node[rson(x)].r + 1] - hash[node[rson(x)].l];
              ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp:79:42: error: reference to 'hash' is ambiguous
  double h2 = hash[node[rson(x)].r + 1] - hash[node[rson(x)].l];
                                          ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:                 template<class _Tp> struct std::hash
     struct hash;
            ^
0_0_21806874_5454.cpp: In function 'void add(int, int, double, double, int)':
0_0_21806874_5454.cpp:92:19: error: reference to 'hash' is ambiguous
   double d1 = cal(hash[node[x].l] - hash[l], hash[r + 1] - hash[node[x].l], a, b);
                   ^
0_0_21806874_5454.cpp:37:5: note: candidates are: int hash [266666]
 int hash[N * 2], hn, opn;
     ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/basic_string.h:3068:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/string:52,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:40,
                 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_21806874_5454.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/functional_hash.h:58:12: note:           


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