Online JudgeProblem SetAuthorsOnline ContestsUser
Web Board
Home Page
F.A.Qs
Statistical Charts
Problems
Submit Problem
Online Status
Prob.ID:
Register
Update your info
Authors ranklist
Current Contest
Past Contests
Scheduled Contests
Award Contest
User ID:
Password:
  Register
Language:
Cousins
Time Limit: 1000MSMemory Limit: 65536K
Total Submissions: 816Accepted: 279

Description

Two strings a and b are defined to be first cousins if they can be made equal by removing no more than half the characters from each. For example "abcdef" and "axcyd" are first cousins because we can remove 3 of the 6 characters (b,e,f) from the first string and 2 of the 5 characters in the second string (x,y) resulting in "acd". Two strings c and d are said to be n+1st cousins if there exists a string e that is a first cousin of c and is an nth cousin of d.

Given two strings x and y, determine the smallest n ≥ 1 such that x is an nth cousin of y.

Input

Input consists of several test cases. Each test case consists of two lines representing x and y. x and y each consist of at least 1 and at most 100 lower case letters. Two lines containing 0 follow the last test case.

Output

For each test case, output a line containing n or not related if x and y are not nth cousins for any n.

Sample Input

a
b
abb
baa
abcdef
axcyd
0
0

Sample Output

2
2
1

Source

[Submit]   [Go Back]   [Status]   [Discuss]

Home Page   Go Back  To top


All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator