Score : $400$ points
Given is a string $S$. Each character in $S$ is either a digit (0
, ..., 9
) or ?
.
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 $0$.
Since the answer can be enormous, print the count modulo $10^9+7$.
0
, ..., 9
) and ?
.Input is given from Standard Input in the following format:
$S$
Print the number of integers satisfying the condition, modulo $10^9+7$.
??2??5
768
For example, $482305, 002865,$ and $972665$ satisfy the condition.
?44
1
Only $044$ satisfies the condition.
7?4
0
We may not be able to produce an integer satisfying the condition.
?6?42???8??2??06243????9??3???7258??5??7???????774????4?1??17???9?5?70???76???
153716888