题目描述
Problem Statement
You have a string S of length N.
Initially, all characters in S are 1s.
You will perform queries Q times.
In the i-th query, you are given two integers L_i, R_i and a character D_i (which is a digit).
Then, you must replace all characters from the L_i-th to the R_i-th (inclusive) with D_i.
After each query, read the string S as a decimal integer, and print its value modulo 998,244,353.
Input
Input is given from Standard Input in the following format:
N Q
L_1 R_1 D_1
:
L_Q R_Q D_Q
Output
Print Q lines.
In the i-th line print the value of S after the i-th query, modulo 998,244,353.
Constraints
- $1 \leq N, Q \leq 200,000$
- $1 \leq L_i \leq R_i \leq N$
- $1 \leq D_i \leq 9$
- All values in input are integers.
Sample Input 1
8 5
3 6 2
1 4 7
3 8 3
2 2 2
4 5 1
Sample Output 1
11222211
77772211
77333333
72333333
72311333
Sample Input 2
200000 1
123 456 7
Sample Output 2
641437905
Don't forget to take the modulo.
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分