AtCoder Regular Contest 185
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Problem Statement
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Define the score of a sequence of positive integers $B = (B_1, B_2, \dots, B_k)$ as $\displaystyle \sum_{i=1}^{k-1} \gcd(B_i, B_{i+1})$.
Given a sequence of positive integers $A = (A_1, A_2, \dots, A_N)$, solve the following problem for $m = 1, 2, \dots, N$.
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- There are
$2^m - 1$non-empty subsequences of the sequence$(A_1, A_2, \dots, A_m)$. Find the sum of the scores of all those subsequences, modulo$998244353$. Two subsequences are distinguished if they are taken from different positions in the sequence, even if they coincide as sequences.
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Constraints
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$1 \leq N \leq 5 \times 10^5$$1 \leq A_i \leq 10^5$- All input values are integers.
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Input
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The input is given from Standard Input in the following format:
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N
A_1 A_2 \dots A_N
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Output
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Print $N$ lines. The $i$-th line should contain the answer for $m = i$.
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样例
Input #1
3
9 6 4
Output #1
0
3
11
Consider the case $m = 3$. Here are the non-empty subsequences of $(A_1, A_2, A_3) = (9, 6, 4)$ and their scores.
- $(9)$: Score is $0$.
- $(6)$: Score is $0$.
- $(4)$: Score is $0$.
- $(9, 6)$: Score is $\gcd(9, 6) = 3$.
- $(9, 4)$: Score is $\gcd(9, 4) = 1$.
- $(6, 4)$: Score is $\gcd(6, 4) = 2$.
- $(9, 6, 4)$: Score is $\gcd(9, 6) + \gcd(6, 4) = 3 + 2 = 5$.
Therefore, the answer for $m = 3$ is $0 + 0 + 0 + 3 + 1 + 2 + 5 = 11$.
Input #2
5
3 8 12 6 9
Output #2
0
1
13
57
155
Input #3
10
47718 21994 74148 76721 98917 73766 29598 59035 69293 29127
Output #3
0
2
14
35
97
372
866
1859
4273
43287
题目信息
题面与样例版权归 AtCoder 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。