A11718. k-substrings
编程题
普及/提高-
知识点
题目描述
You are given a string $s$ consisting of $n$ lowercase Latin letters.
Let's denote $k$ -substring of $s$ as a string $subs_{k}=s_{k}s_{k+1}..s_{n+1-k}$ . Obviously, $subs_{1}=s$ , and there are exactly  such substrings.
Let's call some string $t$ an odd proper suprefix of a string $T$ iff the following conditions are met:
- $|T|>|t|$ ;
- $|t|$ is an odd number;
- $t$ is simultaneously a prefix and a suffix of $T$ .
For evey $k$ -substring () of $s$ you have to calculate the maximum length of its odd proper suprefix.
Let's denote $k$ -substring of $s$ as a string $subs_{k}=s_{k}s_{k+1}..s_{n+1-k}$ . Obviously, $subs_{1}=s$ , and there are exactly  such substrings.
Let's call some string $t$ an odd proper suprefix of a string $T$ iff the following conditions are met:
- $|T|>|t|$ ;
- $|t|$ is an odd number;
- $t$ is simultaneously a prefix and a suffix of $T$ .
For evey $k$ -substring () of $s$ you have to calculate the maximum length of its odd proper suprefix.
输入格式
The first line contains one integer $n$ $(2<=n<=10^{6})$ — the length $s$ .
The second line contains the string $s$ consisting of $n$ lowercase Latin letters.
The second line contains the string $s$ consisting of $n$ lowercase Latin letters.
输出格式
Print  integers. $i$ -th of them should be equal to maximum length of an odd proper suprefix of $i$ -substring of $s$ (or $-1$ , if there is no such string that is an odd proper suprefix of $i$ -substring).
输入输出样例
输入 #1
15 bcabcabcabcabca
输出 #1
9 7 5 3 1 -1 -1 -1
输入 #2
24 abaaabaaaabaaabaaaabaaab
输出 #2
15 13 11 9 7 5 3 1 1 -1 -1 1
输入 #3
19 cabcabbcabcabbcabca
输出 #3
5 3 1 -1 -1 1 1 -1 -1 -1
说明/提示
The answer for first sample test is folowing:
- 1-substring: bcabcabcabcabca
- 2-substring: cabcabcabcabc
- 3-substring: abcabcabcab
- 4-substring: bcabcabca
- 5-substring: cabcabc
- 6-substring: abcab
- 7-substring: bca
- 8-substring: c
- 1-substring: bcabcabcabcabca
- 2-substring: cabcabcabcabc
- 3-substring: abcabcabcab
- 4-substring: bcabcabca
- 5-substring: cabcabc
- 6-substring: abcab
- 7-substring: bca
- 8-substring: c