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View Compilation Error

0_0_15750922_13765.cpp:8:35: error: 'long unsigned int pow [100007]' redeclared as different kind of symbol
 unsigned long hash[maxn], pow[maxn];
                                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/cmath:44:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:38,
                 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_15750922_13765.cpp:3:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:151:18: note: previous declaration 'double pow(double, double)'
   double __cdecl pow(double _X,double _Y);
                  ^
0_0_15750922_13765.cpp: In function 'int judge(int)':
0_0_15750922_13765.cpp:27:12: error: reference to 'hash' is ambiguous
   mem[i].h=hash[i+l-1]-hash[i-1]*pow[l];
            ^
0_0_15750922_13765.cpp:8:15: note: candidates are: long unsigned int hash [100007]
 unsigned long hash[maxn], pow[maxn];
               ^
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_15750922_13765.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_15750922_13765.cpp:27:24: error: reference to 'hash' is ambiguous
   mem[i].h=hash[i+l-1]-hash[i-1]*pow[l];
                        ^
0_0_15750922_13765.cpp:8:15: note: candidates are: long unsigned int hash [100007]
 unsigned long hash[maxn], pow[maxn];
               ^
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_15750922_13765.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_15750922_13765.cpp:27:39: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   mem[i].h=hash[i+l-1]-hash[i-1]*pow[l];
                                       ^
0_0_15750922_13765.cpp: In function 'int main()':
0_0_15750922_13765.cpp:69:3: error: reference to 'hash' is ambiguous
   hash[0]=0;
   ^
0_0_15750922_13765.cpp:8:15: note: candidates are: long unsigned int hash [100007]
 unsigned long hash[maxn], pow[maxn];
               ^
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_15750922_13765.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_15750922_13765.cpp:70:8: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   pow[0]=1;
        ^
0_0_15750922_13765.cpp:72:4: error: reference to 'hash' is ambiguous
    hash[i]=hash[i-1]*seed+str[i];
    ^
0_0_15750922_13765.cpp:8:15: note: candidates are: long unsigned int hash [100007]
 unsigned long hash[maxn], pow[maxn];
               ^
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_15750922_13765.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_15750922_13765.cpp:72:12: error: reference to 'hash' is ambiguous
    hash[i]=hash[i-1]*seed+str[i];
            ^
0_0_15750922_13765.cpp:8:15: note: candidates are: long unsigned int hash [100007]
 unsigned long hash[maxn], pow[maxn];
               ^
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_15750922_13765.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_15750922_13765.cpp:73:9: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
    pow[i]=pow[i-1]*seed;
         ^
0_0_15750922_13765.cpp:73:18: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
    pow[i]=pow[i-1]*seed;
                  ^


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