Beautiful Bracket Sequence (easy version)

This is the easy version of this problem. The only difference is the limit of n - the length of the input string. In this version, 1 ≤ n ≤ 2000. The hard version of this challenge is not offered in the round for the second division.

Let's define a correct bracket sequence and its depth as follow:

• An empty string is a correct bracket sequence with depth 0.
• If "s" is a correct bracket sequence with depth d then "(s)" is a correct bracket sequence with depth d + 1.
• If "s" and "t" are both correct bracket sequences then their concatenation "st" is a correct bracket sequence with depth equal to the maximum depth of s and t.

For a (not necessarily correct) bracket sequence s, we define its depth as the maximum depth of any correct bracket sequence induced by removing some characters from s (possibly zero). For example: the bracket sequence s = "())(())" has depth 2, because by removing the third character we obtain a correct bracket sequence "()(())" with depth 2.

Given a string a consists of only characters '(', ')' and '?'. Consider all (not necessarily correct) bracket sequences obtained by replacing all characters '?' in a by either '(' or ')'. Calculate the sum of all the depths of all these bracket sequences. As this number can be large, find it modulo 998244353.

Hacks in this problem in the first division can be done only if easy and hard versions of this problem was solved.

Input

The only line contains a non-empty string consist of only '(', ')' and '?'. The length of the string is at most 2000.

Output

Print the answer modulo 998244353 in a single line.

Examples

Input

??

Output

1

Input

(?(?))

Output

9

Note

In the first test case, we can obtain 4 bracket sequences by replacing all characters '?' with either '(' or ')':

• "((". Its depth is 0;
• "))". Its depth is 0;
• ")(". Its depth is 0;
• "()". Its depth is 1.

So, the answer is 1 = 0 + 0 + 0 + 1.

In the second test case, we can obtain 4 bracket sequences by replacing all characters '?' with either '(' or ')':

• "(((())". Its depth is 2;
• "()()))". Its depth is 2;
• "((()))". Its depth is 3;
• "()(())". Its depth is 2.

So, the answer is 9 = 2 + 2 + 3 + 2.

inputFormat

input string. In this version, 1 ≤ n ≤ 2000. The hard version of this challenge is not offered in the round for the second division.

Let's define a correct bracket sequence and its depth as follow:

• An empty string is a correct bracket sequence with depth 0.
• If "s" is a correct bracket sequence with depth d then "(s)" is a correct bracket sequence with depth d + 1.
• If "s" and "t" are both correct bracket sequences then their concatenation "st" is a correct bracket sequence with depth equal to the maximum depth of s and t.

For a (not necessarily correct) bracket sequence s, we define its depth as the maximum depth of any correct bracket sequence induced by removing some characters from s (possibly zero). For example: the bracket sequence s = "())(())" has depth 2, because by removing the third character we obtain a correct bracket sequence "()(())" with depth 2.

Given a string a consists of only characters '(', ')' and '?'. Consider all (not necessarily correct) bracket sequences obtained by replacing all characters '?' in a by either '(' or ')'. Calculate the sum of all the depths of all these bracket sequences. As this number can be large, find it modulo 998244353.

Hacks in this problem in the first division can be done only if easy and hard versions of this problem was solved.

Input

The only line contains a non-empty string consist of only '(', ')' and '?'. The length of the string is at most 2000.

outputFormat

Output

Print the answer modulo 998244353 in a single line.

Examples

Input

??

Output

1

Input

(?(?))

Output

9

Note

In the first test case, we can obtain 4 bracket sequences by replacing all characters '?' with either '(' or ')':

• "((". Its depth is 0;
• "))". Its depth is 0;
• ")(". Its depth is 0;
• "()". Its depth is 1.

So, the answer is 1 = 0 + 0 + 0 + 1.

In the second test case, we can obtain 4 bracket sequences by replacing all characters '?' with either '(' or ')':

• "(((())". Its depth is 2;
• "()()))". Its depth is 2;
• "((()))". Its depth is 3;
• "()(())". Its depth is 2.

So, the answer is 9 = 2 + 2 + 3 + 2.

样例

(?(?))

9

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