View Compilation Error

0_0_39402389_21110.cpp: In function 'int main()':
0_0_39402389_21110.cpp:13:18: error: invalid types 'bool [1002][__gnu_cxx::__promote<double>::__type {aka double}]' for array subscript
   13 |                 a[pow(2,j)+i]=0;
      |                  ^
0_0_39402389_21110.cpp:20:18: error: invalid types 'bool [1002][__gnu_cxx::__promote<double>::__type {aka double}]' for array subscript
   20 |                 a[pow(2,j)+i]=1;
      |                  ^