P20181 [CodeChef] BANQUNT
提高+
题目描述

Chef wants to select a subset $S$ of the set $\{1, 2, \ldots, N\}$ such that there are no two integers $x, y \in S$ which satisfy $\frac{x}{y} = M$.
Help Chef find the maximum size of a subset $S$ he can choose and the number of ways in which he can choose a subset $S$ with this maximum size. Since the number of ways to choose $S$ can be very large, calculate it modulo $998,244,353$.

-----Input-----
- The first line of the input contains a single integer $T$ denoting the number of test cases. The description of $T$ test cases follows.
- The first and only line of each test case contains two space-separated integers $N$ and $M$.

-----Output-----
For each test case, print a single line containing two space-separated integers ― the maximum size of a subset Chef can choose and the number of ways to choose a subset with this maximum size modulo $998,244,353$. Note that only the number of ways to choose a subset should be printed modulo $998,244,353$.

-----Constraints-----
- $1 \le T \le 10,000$
- $2 \le M \le N \le 10^{18}$

-----Example Input-----
3
5 2
10 2
100 3

-----Example Output-----
4 1
6 12
76 49152

-----Explanation-----
Example case 1: The only subset $S$ with the maximum size which Chef can choose is $\{1, 3, 4, 5\}$.

输入格式

见题面

输出格式

见题面

样例输入
['3', '5 2', '10 2', '100 3']
样例输出
['4 1', '6 12', '76 49152']