3 ms·

you don't need a full counter. increment, decrement, and check_if_zero are enough. no need for get_value.

• stellalo 11mo ago
  you also need check_if_negative to detect close-before-open
  • jibal 11mo ago
    The counter is at 0, which indicates an error ... that plus the counter being non-zero when reaching the end of input is the entire point.