View Compilation Error

0_0_33568439_10991.cpp: In function 'void dfs(int, int, int)':
0_0_33568439_10991.cpp:32:36: error: 'bj' was not declared in this scope
   if(t[kx+dx[i]][ky+dy[i]] != 'X'&&bj[kx+dx[i]][ky+dy[i]] == 0)
                                    ^