結果
| 問題 |
No.2025 Select $k$-th Submultiset
|
| コンテスト | |
| ユーザー |
gew1fw
|
| 提出日時 | 2025-06-12 20:38:47 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,154 bytes |
| コンパイル時間 | 365 ms |
| コンパイル使用メモリ | 82,176 KB |
| 実行使用メモリ | 105,216 KB |
| 最終ジャッジ日時 | 2025-06-12 20:39:07 |
| 合計ジャッジ時間 | 6,014 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | TLE * 1 -- * 41 |
ソースコード
import sys
def comb(n, k):
if n < 0 or k < 0 or n < k:
return 0
if k == 0 or k == n:
return 1
return comb(n, k-1) * (n - k + 1) // k
def compute_ways(rem, *constraints):
n = len(constraints)
total = 0
for mask in range(0, 1 << n):
bits = bin(mask).count('1')
sum_d = 0
for j in range(n):
if mask & (1 << j):
sum_d += (constraints[j] + 1)
rem_adj = rem - sum_d
if rem_adj < 0:
continue
ways = comb(rem_adj + n - 1, n - 1)
if bits % 2 == 0:
total += ways
else:
total -= ways
return max(0, total)
def find_kth_submultiset(total, k_prime, N, L, c):
remaining = L
counts = [0] * (N + 1)
for i in range(1, N + 1):
max_xi = min(c[i-1], remaining)
for xi_candidate in range(max_xi + 1):
rem = remaining - xi_candidate
if rem < 0:
continue
if i == N:
ways = 1 if rem == 0 else 0
else:
ways = compute_ways(rem, *c[i:])
if ways < k_prime:
k_prime -= ways
else:
counts[i] = xi_candidate
remaining = rem
break
else:
return None
return counts[1:]
def main():
input = sys.stdin.read().split()
ptr = 0
N = int(input[ptr])
ptr += 1
L = int(input[ptr])
ptr += 1
c = list(map(int, input[ptr:ptr + N]))
ptr += N
Q = int(input[ptr])
ptr += 1
queries = []
for _ in range(Q):
queries.append(int(input[ptr]))
ptr += 1
if N == 1:
if L > c[0]:
total = 0
else:
total = 1
else:
total = compute_ways(L, *c)
for k in queries:
if k > total or total == 0:
print(-1)
continue
k_prime = total - k + 1
counts = find_kth_submultiset(total, k_prime, N, L, c)
if not counts:
print(-1)
continue
print(' '.join(map(str, counts)))
if __name__ == '__main__':
main()
gew1fw