結果
問題 |
No.1963 Subset Mex
|
ユーザー |
![]() |
提出日時 | 2025-06-12 15:43:26 |
言語 | PyPy3 (7.3.15) |
結果 |
TLE
|
実行時間 | - |
コード長 | 1,896 bytes |
コンパイル時間 | 352 ms |
コンパイル使用メモリ | 82,300 KB |
実行使用メモリ | 135,868 KB |
最終ジャッジ日時 | 2025-06-12 15:43:35 |
合計ジャッジ時間 | 8,331 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 2 TLE * 1 -- * 23 |
ソースコード
import sys from collections import deque from itertools import combinations from sys import stdin MOD = 998244353 def main(): sys.setrecursionlimit(1 << 25) N = int(stdin.readline().strip()) S = list(map(int, stdin.readline().strip().split())) initial = {} for num in S: if num in initial: initial[num] += 1 else: initial[num] = 1 def get_mex(subset): s = set(subset) mex = 0 while mex in s: mex += 1 return mex visited = set() q = deque() q.append(initial) visited.add(frozenset(initial.items())) count = 0 while q: current = q.popleft() count += 1 elements = list(current.keys()) present = {} for num in elements: present[num] = current[num] items = list(present.items()) n = len(items) for L in range(1, n+1): for indices in combinations(range(n), L): subset_nums = [] for i in indices: num, cnt = items[i] subset_nums.append(num) subset = subset_nums mex = get_mex(subset) new_state = {} for num in elements: new_state[num] = current[num] for num in subset: new_state[num] -= 1 if new_state[num] == 0: del new_state[num] if mex in new_state: new_state[mex] += 1 else: new_state[mex] = 1 new_state_frozen = frozenset(new_state.items()) if new_state_frozen not in visited: visited.add(new_state_frozen) q.append(new_state) print(count % MOD) if __name__ == "__main__": main()