View Compilation Error

0_0_38581728_7891.cpp: In function 'long long int query(long long int)':
0_0_38581728_7891.cpp:26:22: error: 'lwobit' was not declared in this scope
  for(int i=x;i>=1;i-=lwobit(i))
                      ^~~~~~
0_0_38581728_7891.cpp:26:22: note: suggested alternative: 'lowbit'
  for(int i=x;i>=1;i-=lwobit(i))
                      ^~~~~~
                      lowbit