結果
| 問題 |
No.1963 Subset Mex
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-20 20:57:19 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,805 bytes |
| コンパイル時間 | 237 ms |
| コンパイル使用メモリ | 81,720 KB |
| 実行使用メモリ | 103,632 KB |
| 最終ジャッジ日時 | 2025-03-20 20:57:32 |
| 合計ジャッジ時間 | 8,176 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
from collections import defaultdict, deque
from sys import stdin
MOD = 998244353
def main():
N = int(stdin.readline())
S = list(map(int, stdin.readline().split()))
initial = defaultdict(int)
for num in S:
initial[num] += 1
visited = set()
queue = deque()
# Initialize state as tuple of sorted elements with counts
initial_tuple = frozenset(initial.items())
visited.add(initial_tuple)
queue.append(initial)
count = 1 # Initial state is counted
while queue:
current = queue.popleft()
# Generate all possible non-empty subsets (in terms of set elements)
elements = list(current.keys())
m = len(elements)
all_subset_elements = []
from itertools import combinations
for k in range(1, m + 1):
for combo in combinations(elements, k):
all_subset_elements.append(set(combo))
all_subset_elements.append(set())
for subset_set in all_subset_elements:
if not subset_set:
continue # No empty subsets allowed
mex = 0
while mex in subset_set:
mex += 1
new_current = defaultdict(int, current)
for num in subset_set:
new_current[num] -= 1
if new_current[num] == 0:
del new_current[num]
new_current[mex] += 1
# Create a normalized state representation
normalized = frozenset(new_current.items())
if normalized not in visited:
visited.add(normalized)
count += 1
if count >= MOD:
count -= MOD
queue.append(new_current)
print(count % MOD)
if __name__ == '__main__':
main()
lam6er