AtCoder Beginner Contest 135
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Problem Statement
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Given is a string $S$. Each character in $S$ is either a digit (0, ..., 9) or ?.
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Among the integers obtained by replacing each occurrence of ? with a digit, how many have a remainder of $5$ when divided by $13$? An integer may begin with $0$.
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Since the answer can be enormous, print the count modulo $10^9+7$.
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Constraints
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$S$is a string consisting of digits (0, ...,9) and?.$1 \leq |S| \leq 10^5$
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Input
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Input is given from Standard Input in the following format:
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S
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Output
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Print the number of integers satisfying the condition, modulo $10^9+7$.
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样例
Input #1
??2??5
Output #1
768
For example, $482305, 002865,$ and $972665$ satisfy the condition.
Input #2
?44
Output #2
1
Only $044$ satisfies the condition.
Input #3
7?4
Output #3
0
We may not be able to produce an integer satisfying the condition.
Input #4
?6?42???8??2??06243????9??3???7258??5??7???????774????4?1??17???9?5?70???76???
Output #4
153716888
题目信息
题面与样例版权归 AtCoder 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。