Function fill

2018/src/17.py:7–10

(m: dict[tuple[int,int],str], x: int, y: int, d: int)

sys.setrecursionlimit(10000)

def fill(m: dict[tuple[int,int],str], x: int, y: int, d: int) -> None:
  while m[x,y] == '|':
    m[x,y] = '~'
    x += d

def flow(m: dict[tuple[int,int],str], ymax: int, x: int, y: int, d: int) -> bool:
  if y > ymax: