結果
| 問題 |
No.1963 Subset Mex
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 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()
gew1fw