0_0_25383150_11915.cpp:8:16: error: 'int log2 [100005]' redeclared as different kind of symbol
int A[M],log2[M];
^
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_25383150_11915.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:638:25: note: previous declaration 'double log2(double)'
extern double __cdecl log2 (double);
^
0_0_25383150_11915.cpp: In function 'int main()':
0_0_25383150_11915.cpp:10:33: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
for(int i=2; i<=M-5; i++)log2[i]=log2[i>>1]+1;
^
0_0_25383150_11915.cpp:10:44: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
for(int i=2; i<=M-5; i++)log2[i]=log2[i>>1]+1;
^
0_0_25383150_11915.cpp:33:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
int k=log2[r-l+1];
^
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