字符串练习题:【CF119D】 String Transformation(KMP或哈希,枚举,各种优化)

出处:http://blog.csdn.net/ACM_cxlove?viewmode=contents    by—cxlove  

题目:有两个串,s,f  f(s, i, j) = s[i + 1… j - 1] + r(s[j… n - 1]) + r(s[0… i])

通过二元组(i,j)对原串s进行变换,得到新的串,现在要你求这个二元组

http://codeforces.com/problemset/problem/119/D

D. String Transformation time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output

Let s be a string whose length equals n. Its characters are numbered from 0 to n - 1,i and j are integers,0 ≤ i < j < n. Let’s define functionf as follows:

f(s, i, j) = s[i + 1…j - 1] + r(s[jn - 1]) + r(s[0…i]).

Here s[pq] is a substring of strings, that starts in position p and ends in position q (inclusive); “+” is the string concatenation operator;r(x) is a string resulting from writing the characters of thex string in the reverse order. If j = i + 1, then the substring s[i + 1…j - 1] is considered empty.

You are given two strings a and b. Find such values of i andj, that f(a, i, j) = b. Numberi should be maximally possible. If for thisi there exists several valid values of j, choose the minimal j.

Input

The first two input lines are non-empty strings a andb correspondingly. Each string’s length does not exceed106 characters. The strings can contain any characters with ASCII codes from 32 to 126 inclusive.

Output

Print two integers i, j — the answer to the problem. If no solution exists, print “-1 -1” (without the quotes).

Sample test(s) Input

Die Polizei untersucht eine Straftat im IT-Bereich.
untersucht eine Straftat.hciereB-TI mi  ieziloP eiD

Output

11 36

Input

cbaaaa
aaaabc

Output

4 5

Input

123342
3324212

Output

-1 -1

    原文作者:KMP算法
    原文地址: https://blog.csdn.net/NOI2015/article/details/43611385
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