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View Compilation Error

0_0_17699937_26547.cpp:40:19: error: 'long long int pow [61]' redeclared as different kind of symbol
 ll ans[N<<1],pow[M],dis[N];
                   ^
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_17699937_26547.cpp:5:
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_17699937_26547.cpp: In function 'void insert(long long int)':
0_0_17699937_26547.cpp:56:15: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   int t=(pow[i]&x)>0;
               ^
0_0_17699937_26547.cpp: In function 'long long int search(int, long long int)':
0_0_17699937_26547.cpp:70:17: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   int t=!((pow[i]&x)>0);
                 ^
0_0_17699937_26547.cpp: In function 'int main()':
0_0_17699937_26547.cpp:107:7: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
  pow[0]=1ll;
       ^
0_0_17699937_26547.cpp:108:28: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
  for(int i=1;i<M;i++) pow[i]=pow[i-1]<<1;
                            ^
0_0_17699937_26547.cpp:108:37: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
  for(int i=1;i<M;i++) pow[i]=pow[i-1]<<1;
                                     ^


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