Tic-Tac-Toe Referee

Difficulty: 1300 2000 ms 128 MB

implementation

Given a tic-tac-toe board (X went first; the position arose from legal play), print the verdict: X or O if that player has three in a row, DRAW for a full board with no winner, ONGOING otherwise.

Input: three lines of three characters (X, O or .).

Output: the verdict.

Constraints:

• the position is reachable in legal play

Sample Tests

XXX
OO.
...

X

XOX
OXO
OXO

DRAW

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