Tic-Tac-Toe Winner

A 3×3 board is given as three strings of X, O and . (empty). A player wins with three of their marks in a row, column or diagonal. Boards never have two winners.

Implement tic_tac_toe_winner(board).

Input

board: Three rows of three characters each.

Output

Return "X" or "O" for the winner, "Draw" if the board is full with no winner, or "Pending" if empty cells remain and nobody has won.

Restricciones

board has exactly 3 rows of length 3

Ejemplos

Entrada:
board = ["XOX", ".X.", "O.X"]

Salida esperada:
expected = "X"

Entrada:
std::vector<std::string> board = {"XOX", ".X.", "O.X"};

Salida esperada:
std::string expected = "X";

Entrada:
string[] board = new string[] {"XOX", ".X.", "O.X"};

Salida esperada:
string expected = "X";

Entrada:
board = ["XOX", "XOO", "OXX"]

Salida esperada:
expected = "Draw"

Entrada:
std::vector<std::string> board = {"XOX", "XOO", "OXX"};

Salida esperada:
std::string expected = "Draw";

Entrada:
string[] board = new string[] {"XOX", "XOO", "OXX"};

Salida esperada:
string expected = "Draw";

Referencias

Este reto está adaptado para CodeUtility. Sigue el enunciado y las restricciones indicadas arriba.

• GWU CS1111 Introduction to Software Development - lab sequence