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View Compilation Error

0_0_21792305_3411.cpp:15:18: error: 'long long int pow [2005][2005]' redeclared as different kind of symbol
 ll pow[2005][2005];
                  ^
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_21792305_3411.cpp:6:
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_21792305_3411.cpp: In function 'long long int quickpow(long long int, long long int)':
0_0_21792305_3411.cpp:18:13: error: invalid types '<unresolved overloaded function type>[long long int]' for array subscript
     if(pow[n][m]) return pow[n][m];
             ^
0_0_21792305_3411.cpp:18:31: error: invalid types '<unresolved overloaded function type>[long long int]' for array subscript
     if(pow[n][m]) return pow[n][m];
                               ^
0_0_21792305_3411.cpp:35:10: error: invalid types '<unresolved overloaded function type>[long long int]' for array subscript
     pow[n][m]=ans;
          ^
0_0_21792305_3411.cpp: In function 'int main()':
0_0_21792305_3411.cpp:72:28: error: ISO C++ forbids applying 'sizeof' to an expression of function type [-fpermissive]
     memset(pow,0,sizeof(pow));
                            ^
0_0_21792305_3411.cpp:72:29: error: cannot resolve overloaded function 'pow' based on conversion to type 'void*'
     memset(pow,0,sizeof(pow));
                             ^


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