Online JudgeProblem SetAuthorsOnline ContestsUser
Web Board
Home Page
Statistical Charts
Submit Problem
Online Status
Update your info
Authors ranklist
Current Contest
Past Contests
Scheduled Contests
Award Contest
User ID:
Diamond Puzzle
Time Limit: 2000MSMemory Limit: 131072K
Total Submissions: 1641Accepted: 901


A diamond puzzle is played on a tessellated hexagon like the one shown in Figure 1 below. And in this problem the faces produced by the tessellation are identified as they are numbered in the same figure. If two faces share a side, they are called neighboring faces. Thus, even-numbered faces have three neighboring faces, while odd-numbered faces have only two. At any point during the play of the puzzle, six of the seven faces hold a unique digit ranging from 1 to 6, and the other one is empty. A move in the puzzle is to move a digit from one face to a neighboring empty one.

Starting from any configuration, some series of moves can always make the puzzle look identical to either one shown in Figures 2 and 3. Your task is to calculate the minimum number of moves to make it become the one in Figure 2.


The input contains multiple test cases. The first contains an integer N (0 ≤ N ≤ 5,040), the number of test cases. Then follow N lines, each with a permutation of {0, 1, 2, 3, 4, 5, 6} describing a starting configuration of the puzzle. The ith digit in the permutation is the one in the face numbered i − 1. A zero means the face is empty.


For each test cases, output the minimum number of moves the configuration takes to reach the one shown in Figure 2. If this is impossible, just output “-1” and nothing else.

Sample Input


Sample Output



[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