/in/foo.cc:28:15: error: empty character constant
   28 |     result += ''.join(non_repeating_part) + ''.join(repeating_part) + "Yes"
      |               ^~
/in/foo.cc:28:45: error: empty character constant
   28 |     result += ''.join(non_repeating_part) + ''.join(repeating_part) + "Yes"
      |                                             ^~
/in/foo.cc:30:15: error: empty character constant
   30 |     result += ''.join(decimal) + "No"
      |               ^~
/in/foo.cc:1:1: error: 'a' does not name a type
    1 | a, b = map(int, input().split())
      | ^
/in/foo.cc:8:1: error: 'index' does not name a type
    8 | index = 0
      | ^~~~~