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

hide comments
Viktor Fonic: 2013-02-07 09:44:34

This one caused me a lot of trouble:
XOX
OXX
OOX
no

Apurva Kumar: 2013-01-20 10:51:20

Is X always playing first?If not then please explain 2nd test case.

Last edit: 2013-01-20 11:16:01
Haijun Deng: 2013-01-14 23:34:50

One more test case:
XX.
X..
OOO
yes

kamalesh: 2012-12-31 03:57:11

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
SuMiT BaNsAl: 2012-12-24 17:18:09

i have checked for more than 50 test cases. still getting wrong ans.
my submission id: 8337937

Ike Ellsworth: 2012-12-18 23:48:33

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
strings: 2012-11-28 11:38:17

@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
Josef Ziegler: 2012-08-22 16:39:19

Yes it is, but in the input Os are given, not 0s.

nani: 2012-06-15 18:08:30

Last edit: 2014-02-08 03:26:14
Shubham: 2012-05-19 09:19:52

are all the test cases read at once?


Added by:Camilo Andrés Varela León
Date:2006-12-14
Time limit:1s
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