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day 23 python part 2

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magical 2022-12-22 21:54:37 -08:00
parent 8c0cd8e300
commit 91da124cf7
1 changed files with 13 additions and 5 deletions
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18
day23/sol.py
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@ -35,9 +35,9 @@ def neighbors(pos):
def migrate(start, rounds): def migrate(start, rounds):
moves = ['N', 'S', 'W', 'E'] moves = ['N', 'S', 'W', 'E']
for _ in range(rounds): for i in range(rounds):
show(start) #show(start)
print("-") #print("-")
propose = {} propose = {}
destCount = Counter() destCount = Counter()
@ -52,15 +52,20 @@ def migrate(start, rounds):
break break
next = {} next = {}
moved = 0
for p, d in propose.items(): for p, d in propose.items():
if destCount[d] <= 1: if destCount[d] <= 1:
next[d] = 1 next[d] = 1
moved += p != d
else: else:
next[p] = 1 next[p] = 1
if not moved:
break
moves.append(moves.pop(0)) moves.append(moves.pop(0))
start = next start = next
return start return start, i+1
def show(pos): def show(pos):
xmin = min(x for x,y in pos) xmin = min(x for x,y in pos)
@ -80,5 +85,8 @@ def count_empty(pos):
#print(pos) #print(pos)
n = count_empty(migrate(pos, 10)) end, _ = migrate(pos, 10)
print(count_empty(end))
_, n = migrate(pos, 100000)
print(n) print(n)