結果
問題 |
No.1631 Sorting Integers (Multiple of K) Easy
|
ユーザー |
![]() |
提出日時 | 2025-06-12 20:53:52 |
言語 | PyPy3 (7.3.15) |
結果 |
TLE
|
実行時間 | - |
コード長 | 1,488 bytes |
コンパイル時間 | 148 ms |
コンパイル使用メモリ | 81,992 KB |
実行使用メモリ | 351,896 KB |
最終ジャッジ日時 | 2025-06-12 20:57:40 |
合計ジャッジ時間 | 5,523 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 10 TLE * 1 -- * 17 |
ソースコード
import sys from collections import defaultdict def main(): N, K = map(int, sys.stdin.readline().split()) c = list(map(int, sys.stdin.readline().split())) if sum(c) != N: print(0) return # Precompute factorials up to N max_n = N factorial = [1] * (max_n + 1) for i in range(1, max_n + 1): factorial[i] = factorial[i-1] * i # Compute initial multinomial coefficient initial_counts = tuple(c) sum_counts = sum(initial_counts) denominator = 1 for count in initial_counts: if count > 0: denominator *= factorial[count] multinom = factorial[sum_counts] // denominator # Initialize DP dp = defaultdict(int) dp[(initial_counts, 0)] = multinom for _ in range(N): new_dp = defaultdict(int) for (counts, r), ways in dp.items(): s = sum(counts) if s == 0: continue for d in range(9): if counts[d] == 0: continue new_counts = list(counts) new_counts[d] -= 1 new_counts_tuple = tuple(new_counts) digit = d + 1 new_r = (r * 10 + digit) % K new_ways = ways * counts[d] // s new_dp[(new_counts_tuple, new_r)] += new_ways dp = new_dp zero_counts = tuple([0] * 9) print(dp.get((zero_counts, 0), 0)) if __name__ == "__main__": main()