Alice's Classified Message

TimeLimit:8000MS  MemoryLimit:131072KB
64-bit integer IO format:%I64d
未提交 | 登录后收藏
Problem Description
Alice wants to send a classified message to Bob. She tries to encrypt the message with her original encryption method. The message is a string $S$, which consists of $N$ lowercase letters.

$S[a…b]$ means a substring of S ranging from $S[a]$ to $S[b]$ ($0≤a≤b<N$). If the first $i$ letters have been encrypted, Alice will try to find a magic string $P$. Assuming $P$ has $K$ letters, $P$ is the longest string which satisfies $P=S[T...T+K-1]$ ($0≤T<i$,$T+K≤N$) and $P=S[i…i+K-1] (i+K≤N)$. In other words, $P$ is a substring of $S$, of which starting address is within $[0...i-1]$, and $P$ is also a prefix of $S[i...N-1]$. If $P$ exists, Alice will append integer $K$ and $T$ to ciphertext. If $T$ is not unique, Alice would select the minimal one. And then $i$ is incremented by $K$. If $P$ does not exist, Alice will append -1 and the ASCII code of letter $S[i]$ to ciphertext, and then increment $i$ by 1.

Obviously the first letter cannot be encrypted. That is to say, $P$ does not exist when $i=0$. So the first integer of ciphertext must be -1, and the second integer is the ASCII code of $S[0]$.

When $i=N$, all letters are encrypted, and Alice gets the final ciphertext, which consists of many pairs of integers. Please help Alice to implement this method.
Input
The first line of input contains an integer $T$, which represents the number of test cases ($T≤50$). Each test case contains a line of string, which has no more than 100000 lowercase letters. It is guaranteed that the total length of the strings is not greater than $2×10^6$.
Output
For each test case, output a single line consisting of “ Case #X:” first. $X$ is the test case number starting from 1. Output the ciphertext in the following lines. Each line contains two integers separated by a single space.
SampleInput
2
aaaaaa
aaaaabbbbbaaabbc
SampleOutput
Case #1:
-1 97
5 0
Case #2:
-1 97
4 0
-1 98
4 5
5 2
-1 99
Submit
题目统计信息详细
总AC数2
通过人数2
尝试人数2
总提交量3
AC率66.67%
AC该题后可以添加标签
贴完标签可以获得20ACB。
并且可以获得本题所有提交代码查看权限。
点击标题可以显示标签。
如果你还没认真思考过这题,请不要查看标签
如果您已经通过了该题,请务为该题贴上标签
出处

T^T Online Judge

[BUG反馈] [FAQ] [闽ICP备17026590号-1]
当前版本:3.24 系统时间: