QOJ.ac

QOJ

時間限制: 3 s 記憶體限制: 512 MB 總分: 100

#9647. Digit DP

统计

Background

Little $L$ once created the following problem:

  • Given an integer sequence $c$ of length $4$, determine if there exists an integer sequence $a$ of length $4$ such that $0 \le a_i \le c_i$ and $(((a_1 \, \text{and} \, a_2) \, \text{xor} \, a_3) \, \text{or} \, a_4 = m$.

After seeing this, Little $C$ felt that this digit DP problem was very standard and uninteresting. Little $L$ then modified the order of bitwise operations in the problem above and created many more problems.

Little $C$ could not take it anymore: "Can you stop creating template digit DP problems?"

Little $L$ had no choice but to hand this pile of problems over to you. However, to increase the challenge, you now need to calculate the answer for all possible $c_i$ and find their sum.

Description

Given a string $s$ of length $n-1$, for a non-negative integer sequence $a$ of length $n$, define its generated sequence $b$ as:

  • $b_1 = a_1$;
  • For $i > 1$:
    • If $s_{i-1} = A$, then $b_i = b_{i-1} \, \text{and} \, a_i$.
    • If $s_{i-1} = O$, then $b_i = b_{i-1} \, \text{or} \, a_i$.
    • If $s_{i-1} = X$, then $b_i = b_{i-1} \, \text{xor} \, a_i$.

Given a non-negative integer $k$. There are $q$ queries. For each query, given $m$, find how many integer sequences $c$ of length $n$ satisfy:

  • For $1 \le i \le n$, $0 \le c_i < 2^k$.
  • There exists at least one integer sequence $a$ of length $n$ such that:
    • For $1 \le i \le n$, $0 \le a_i \le c_i$.
    • For the generated sequence $b$ of $a$, $b_n = m$.

Since the answer can be very large, you only need to output the result modulo $2^{32}$.

Input

The first line contains three integers $n, k, q$.

The second line contains a string $s$ of length $n-1$.

The next $q$ lines each contain a query $m$.

Output

Output $q$ lines, each containing a non-negative integer representing the result modulo $2^{32}$.

Examples

Input 1

3 1 2
OA
0
1

Output 1

8
3

Input 2

4 2 2
XOA
1
2

Output 2

189
112

Input 3

4 2 3
XAO
1
2
3

Output 3

237
176
143

Input 4

10 10 3
AOOXOAOXA
749
666
135

Output 4

4239261913
1948492800
2799056799

Constraints

This problem uses bundled testing. You will only receive points for a subtask if you pass all test cases within that subtask.

Subtask ID $n \le$ $k \le$ $q \le$ Special Property Score Dependency
$1$ $4$ $5$ $200$ None $10$ None
$2$ $20$ $8$ $20$ None $10$ None
$3$ $200$ $16$ $1$ None $10$ None
$4$ $200$ $16$ $200$ None $10$ $1, 2, 3$
$5$ $200$ $30$ $1$ $\text{popcount}(m) \le 16$ $10$ $3$
$6$ $1000$ $30$ $1000$ $s$ does not contain $A$ $10$ None
$7$ $50$ $30$ $50$ None $10$ $2$
$8$ $1000$ $30$ $1$ None $10$ $5$
$9$ $200$ $30$ $200$ None $10$ $4, 5, 7$
$10$ $1000$ $30$ $1000$ None $10$ $6, 8, 9$

For $100\%$ of the data, $2 \le n \le 1000$, $1 \le q \le 1000$, $1 \le k \le 30$, $0 \le m < 2^k$.

Editorials

IDTypeStatusTitlePosted ByLast UpdatedActions
EditorialOpen Official EditorialQingyu- Download

Discussions

About Discussions

The discussion section is only for posting: General Discussions (problem-solving strategies, alternative approaches), and Off-topic conversations.

This is NOT for reporting issues! If you want to report bugs or errors, please use the Issues section below.

Open Discussions 0
No discussions in this category.

Issues

About Issues

If you find any issues with the problem (statement, scoring, time/memory limits, test cases, etc.), you may submit an issue here. A problem moderator will review your issue.

Guidelines:

  1. This is not a place to publish discussions, editorials, or requests to debug your code. Issues are only visible to you and problem moderators.
  2. Do not submit duplicated issues.
  3. Issues must be filed in English or Chinese only.
Active Issues 0
No issues in this category.
Closed/Resolved Issues 0
No issues in this category.