apps_900
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Points:
3
Time limit:
30.0s
Memory limit:
250M
Problem type
Allowed languages
Python
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.
-----Constraints-----
- S is a string consisting of digits (0, ..., 9) and ?.
- 1 \leq |S| \leq 10^5
-----Input----- Input is given from Standard Input in the following format: S
-----Output----- Print the number of integers satisfying the condition, modulo 10^9+7.
-----Sample Input----- ??2??5
-----Sample Output----- 768
For example, 482305, 002865, and 972665 satisfy the condition.
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