题目描述
Problem Statement
You are given $a sequence A = (A_1, A_2, \dots, A_N)$ of length N. For each $k = 1, 2, \dots, N,$ find the number, modulo 998244353, of (not necessarily contiguous) subsequences of A of length k that are arithmetic sequences. Two subsequences are distinguished if they are taken from different positions, even if they are equal as sequences.
What is a subsequence?
A subsequence of a sequence A is a sequence obtained by deleting zero or more elements from A and arranging the remaining elements without changing the order.
Input
The input is given from Standard Input in the following format:
N
$A_1 A_2 \dots A_N$
Output
Print the answers for $k = 1, 2, \dots, N$ in this order, in a single line, separated by spaces.
Constraints
- $1 \leq N \leq 80$
- $1 \leq A_i \leq 10^9$
- All input values are integers.
Sample Input 1
5
1 2 3 2 3
Sample Output 1
5 10 3 0 0
- There are 5 subsequences of length 1, all of which are arithmetic sequences.
- There are 10 subsequences of length 2, all of which are arithmetic sequences.
- There are 3 subsequences of length 3 that are arithmetic sequences: (A_1, A_2, A_3), (A_1, A_2, A_5), and (A_1, A_4, A_5).
- There are no arithmetic subsequences of length 4 or more.
Sample Input 2
4
1 2 3 4
Sample Output 2
4 6 2 1
Sample Input 3
1
100
Sample Output 3
1
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分