View Compilation Error

0_0_37967558_27445.cpp: In function 'int find(int)':
0_0_37967558_27445.cpp:22:16: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   if (next[root][bit ^ 1]) root = next[root][bit ^ 1];
                ^
0_0_37967558_27445.cpp:22:44: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   if (next[root][bit ^ 1]) root = next[root][bit ^ 1];
                                            ^
0_0_37967558_27445.cpp:23:24: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   else root = next[root][bit];
                        ^