/in/foo.cc:85:16: error: empty character constant
   85 |         return ''.join(res)
      |                ^~
/in/foo.cc:118:13: error: empty character constant
  118 |     t = int(''.join(t_str))
      |             ^~
/in/foo.cc:127:14: error: empty character constant
  127 |         op = ''.join(op)
      |              ^~
/in/foo.cc:128:18: warning: multi-character character constant [-Wmultichar]
  128 |         if op == 'Move':
      |                  ^~~~~~
/in/foo.cc:135:21: error: empty character constant
  135 |             k = int(''.join(k_str))
      |                     ^~
/in/foo.cc:137:20: warning: character constant too long for its type
  137 |         elif op == 'Insert':
      |                    ^~~~~~~~
/in/foo.cc:144:21: error: empty character constant
  144 |             n = int(''.join(n_str))
      |                     ^~
/in/foo.cc:149:17: error: empty character constant
  149 |             s = ''.join(s[:n])
      |                 ^~
/in/foo.cc:151:20: warning: character constant too long for its type
  151 |         elif op == 'Delete':
      |                    ^~~~~~~~
/in/foo.cc:158:21: error: empty character constant
  158 |             n = int(''.join(n_str))
      |                     ^~
/in/foo.cc:160:20: warning: multi-character character constant [-Wmultichar]
  160 |         elif op == 'Get':
      |                    ^~~~~
/in/foo.cc:167:21: error: empty character constant
  167 |             n = int(''.join(n_str))
      |                     ^~
/in/foo.cc:170:20: warning: multi-character character constant [-Wmultichar]
  170 |         elif op == 'Prev':
      |                    ^~~~~~
/in/foo.cc:172:20: warning: multi-character character constant [-Wmultichar]
  172 |         elif op == 'Next':
      |                    ^~~~~~
/in/foo.cc:1:1: error: 'import' does not name a type
    1 | import bisect
      | ^~~~~~
/in/foo.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'