View Compilation Error

0_0_38672616_13885.cpp: In function 'bool work(long long int, long long int, long long int, long long int)':
0_0_38672616_13885.cpp:88:9: error: 'b' was not declared in this scope
   88 |         b = dis[1][tb] * 2;
      |         ^
0_0_38672616_13885.cpp:125:51: error: 'aa' was not declared in this scope; did you mean 'a'?
  125 |                                 x += bb * k, y -= aa * k;
      |                                                   ^~
      |                                                   a
0_0_38672616_13885.cpp:129:51: error: 'aa' was not declared in this scope; did you mean 'a'?
  129 |                                 x -= bb * k, y += aa * k;
      |                                                   ^~
      |                                                   a