TOE1 - Tic-Tac-Toe ( I )

Tic Tac Toe is a child's game played on a 3 by 3 grid. One player, X, starts by placing an X at an unoccupied grid position. Then the other player, O, places an O at an unoccupied grid position. Play alternates between X and O until the grid is filled or one player's symbols occupy an entire line (vertical, horizontal, or diagonal) in the grid.

We will denote the initial empty Tic Tac Toe grid with nine dots. Whenever X or O plays we fill in an X or an O in the appropriate position. The example below illustrates each grid configuration from the beginning to the end of a game in which X wins.

subir imagenes

Your job is to read a grid and to determine whether or not it could possibly be part of a valid Tic Tac Toe game. That is, is there a series of plays that can yield this grid somewhere between the start and end of the game?

Input

The first line of input contains N, the number of test cases. 4N-1 lines follow, specifying N grid configurations separated by empty lines.

Output

For each case print "yes" or "no" on a line by itself, indicating whether or not the configuration could be part of a Tic Tac Toe game.

Example

Input:
2
X.O
OO.
XXX

O.X
XX.
OOO

Output:
yes
no

Added by:Camilo Andrés Varela León
Date:2006-12-14
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ERL JS-RHINO NODEJS PERL6 VB.NET
Resource:Waterloo local 2002.09.21

hide comments
2013-02-07 09:44:34 Viktor Fonic
This one caused me a lot of trouble:
XOX
OXX
OOX
no
2013-01-20 10:51:20 Apurva Kumar
Is X always playing first?If not then please explain 2nd test case.

Last edit: 2013-01-20 11:16:01
2013-01-14 23:34:50 Haijun Deng
One more test case:
XX.
X..
OOO
yes
2012-12-31 03:57:11 kamalesh
INPUT:
3
XXO
OOX
OXX

XXX
OO.
..O

XXX
OOO
...

OUTPUT:
no
no
no
which caused me 2 WA's

Last edit: 2012-12-31 03:57:59
2012-12-24 17:18:09 SuMiT BaNsAl
i have checked for more than 50 test cases. still getting wrong ans.
my submission id: 8337937
2012-12-18 23:48:33 Ike Ellsworth
O.X
XX.
OOO
This is not a valid state because X goes first, not O.

XXX
OOX
OO.
This is not valid because when X places his 4th X he wins, and O therefore CANNOT place their fourth O, since the game is over.

Last edit: 2012-12-18 23:50:18
2012-11-28 11:38:17 strings
@admin... please check submission id 8140303... checked for >35 tc's including all given in sample and comments (and my own too), still getting WA.

got my mistake...AC :)

Last edit: 2012-11-28 14:54:21
2012-08-22 16:39:19 Josef Ziegler
Yes it is, but in the input Os are given, not 0s.
2012-06-15 18:08:30 nani


Last edit: 2014-02-08 03:26:14
2012-05-19 09:19:52 Shubham
are all the test cases read at once?
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