27399번 - Lucky Numbers 서브태스크다국어

It's a well known fact that in some cultures the number 13 brings bad luck.

You are given a number X consisting of N digits. You are to compute how many numbers smaller than or equal to X don't contain 13 as a substring in their base 10 representation. Since the answer can be quite large, you are to print it modulo 1 000 000 007.

In addition, you are to process Q queries of two possible types:

1. Query(radixL, radixR): you are to compute how many numbers smaller than or equal to substr(X, radixL, radixR) don't contain 13 as a substring in their base 10 representation. Since the answer can be quite large, you are to print it modulo 1 000 000 007. substr(X, L, R) stands for the substring of X starting from the L-th digit and ending with the R-th digit counting from left to right;
2. Update(radix, newDigit): one of X's digits is replaced. In particular, digit numbered radix counting from left to right is changed to newDigit.

Note that number X is 1-indexed.

Note that number X and substr(X, l, r) may have leading zeros.

The first line of input contains two integers N and Q (1 ≤ N ≤ 100 000, 0 ≤ Q ≤ 10 000) - the number of digits of number X and the number of queries that need to be processed.

The second line of input contains the number X.

The next Q lines describe the queries that need to be processed. Each line starts with an integer t (1 ≤ t ≤ 2) - the type of query that needs to be processed.

If t = 1, then the line describes a Query and two integers radixL and radixR (1 ≤ radixL ≤ radixR ≤ N) follow - the left and right ends of the substring that you need to consider as bounds for the query.

Otherwise (t = 2), the line describes an Update and two integers radix and newDigit (1 ≤ radix ≤ N, 0 ≤ newDigit ≤ 9) follow - the position of the digit that needs to be changed and the new value of the digit.

The first line of the output contains a single integer - how many numbers smaller than or equal to X don't contain 13 as a substring in their base 10 representation. Since the answer can be quite large, you are to print it modulo 1 000 000 007.

Then, for each query of the first type, print the answer modulo 1 000 000 007 on a separate line.

There are 528145 non-negative integers smaller than or equal to 560484 not containing digits 13 as a substring in their base 10 representation. Note that this includes the number 0.

X is initially 560484.

After update "2 6 4", X becomes 560484.

After update "2 1 4", X becomes 460484.

After update "2 5 6", X becomes 460464.

After update "2 6 1", X becomes 460461.

After update "2 3 6", X becomes 466461.

Query "1 3 6" asks us how many non-negative integers smaller than or equal to 466461 don't contain substring 13 - there are 6228 such numbers.

Query "1 1 3" asks us how many non-negative integers smaller than or equal to 466461 not containing substring 13 - there are 452 such numbers.

Query "1 6 6" asks us how many non-negative integers smaller than or equal to 466461 not containing substring 13 - there are 2 such numbers: 0 and 1.

Query "1 2 6" asks us how many non-negative integers smaller than or equal to 466461 not containing substring 13 - there are 63454 such numbers. After update "2 1 7", X becomes 766461.