No.3377 Sigma Index × A Problems
タグ : / 解いたユーザー数 25
作問者 : 👑
Iroha_3856
Problem Statement
The problem setter, loop0919, came up with the following problem.
Index × A Problem:
You are given positive integers $l, r ~ (l \leq r)$.
Find the maximum length of a sequence $A$ satisfying all of the following conditions.
- Each element of $A$ is an integer between $l$ and $r$, inclusive.
- $i \times A_i ~ (1 \leq i \leq |A|)$ is constant.
However, loop0919 thought that this problem might have appeared before, and decided to modify it as follows.
Sigma Index × A Problems:
You are given a positive integer $N$.
Define $f(l, r)$ as the answer to the Index × A Problem for this $l, r$.Find $\displaystyle \sum_{l = 1}^N \sum_{r = l}^N f(l, r)$ modulo $998244353$.
You are given a positive integer $N$. Find the answer to the Sigma Index × A Problems for this $N$.
You are given $T$ test cases; solve each of them.
Constraints
- $1 \leq T \leq 10^5$
- Each test case satisfies all of the following constraints.
- $1 \leq N \leq 10^{17}$
- All input values are integers.
Input
The input is given from Standard Input in the following format, where $\mathrm{case}_t ~ (1 \leq t \leq T)$ represents the $t$-th test case.
$T$
$\mathrm{case}_1$
$\mathrm{case}_2$
$\vdots$
$\mathrm{case}_T$
Each test case is given in the following format.
$N$
Output
Print $T$ lines. The $t$-th line should contain the answer to the $t$-th test case.
Sample
Sample 1
Input
5 3 16 256 1000000007 31415926535897932
Output
8 247 77323 452669419 124925574
For the $1$-st test case, the following holds.
- $f(1, 1) = 1$. For example, the sequence $A = (1)$ of length $1$ satisfies the conditions in the Index × A Problem.
- $f(1, 2) = 2$. For example, the sequence $A = (2, 1)$ of length $2$ satisfies the conditions in the Index × A Problem.
- $\vdots$
Calculating in this way, it can be shown that $\displaystyle \sum_{l = 1}^N \sum_{r = l}^N f(l, r) = 8$.
提出するには、Twitter 、GitHub、 Googleもしくは右上の雲マークをクリックしてアカウントを作成してください。