Codeforces Round 785 (Div. 2)
C
Palindrome Basis
Codeforces
1500
原题
← BD →
翻译中…

You are given a positive integer $n$. Let's call some positive integer $a$ without leading zeroes palindromic if it remains the same after reversing the order of its digits. Find the number of distinct ways to express $n$ as a sum of positive palindromic integers. Two ways are considered different if the frequency of at least one palindromic integer is different in them. For example, $5=4+1$ and $5=3+1+1$ are considered different but $5=3+1+1$ and $5=1+3+1$ are considered the same.

翻译中…

Formally, you need to find the number of distinct multisets of positive palindromic integers the sum of which is equal to $n$.

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Since the answer can be quite large, print it modulo $10^9+7$.

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Input

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The first line of input contains a single integer $t$ ($1\leq t\leq 10^4$) denoting the number of testcases.

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Each testcase contains a single line of input containing a single integer $n$ ($1\leq n\leq 4\cdot 10^4$) — the required sum of palindromic integers.

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Output

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For each testcase, print a single integer denoting the required answer modulo $10^9+7$.

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Note

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For the first testcase, there are $7$ ways to partition $5$ as a sum of positive palindromic integers:

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  • $5=1+1+1+1+1$
  • $5=1+1+1+2$
  • $5=1+2+2$
  • $5=1+1+3$
  • $5=2+3$
  • $5=1+4$
  • $5=5$
翻译中…

For the second testcase, there are total $77$ ways to partition $12$ as a sum of positive integers but among them, the partitions $12=2+10$, $12=1+1+10$ and $12=12$ are not valid partitions of $12$ as a sum of positive palindromic integers because $10$ and $12$ are not palindromic. So, there are $74$ ways to partition $12$ as a sum of positive palindromic integers.

翻译中…

样例

Input #1
2
5
12
Output #1
7
74
InputCopy OutputCopy
题目信息
题号
1673C
时间限制
2 s
内存限制
256 MB
标签
暴力
动态规划
数学
数论

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