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| author | mhsn <mail@mhsn.net> | 2026-03-18 21:48:13 +0000 |
|---|---|---|
| committer | mhsn <mail@mhsn.net> | 2026-03-18 21:48:13 +0000 |
| commit | 86bac31392a76da84817eec020d2b84d099b3cc1 (patch) | |
| tree | e2ee52db59b86b914d5b4bcceb19c9b5d899fff4 /aoc/2024/11/python.py | |
| parent | 62fe361fc42dea75deaf7ac31c0ba6ba80e26a9c (diff) | |
| download | puzzles-master.tar.gz puzzles-master.zip | |
Diffstat (limited to 'aoc/2024/11/python.py')
| -rwxr-xr-x | aoc/2024/11/python.py | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/aoc/2024/11/python.py b/aoc/2024/11/python.py new file mode 100755 index 0000000..37f658e --- /dev/null +++ b/aoc/2024/11/python.py @@ -0,0 +1,30 @@ +#!/usr/bin/env python3 + +from fileinput import input +from functools import cache +from math import floor, log + +stones = [int(x) for x in input().readline().split()] + + +@cache +def blink(s, n): + if n == 0: + return 1 + + if s == 0: + return blink(1, n - 1) + + digits = floor(log(s, 10) + 1e-6) + 1 + if digits % 2 == 0: + left, right = divmod(s, 10 ** (digits // 2)) + return blink(left, n - 1) + blink(right, n - 1) + + return blink(s * 2024, n - 1) + + +silver = sum(blink(s, 25) for s in stones) +gold = sum(blink(s, 75) for s in stones) + +print("silver:", silver) +print("gold:", gold) |
