Tic-tac-toe is played by two players A and B on a 3 x 3 grid. The rules of Tic-Tac-Toe are:
' '.A always places 'X' characters, while the second player B always places 'O' characters.'X' and 'O' characters are always placed into empty squares, never on filled ones.Given a 2D integer array moves where moves[i] = [rowi, coli] indicates that the ith move will be played on grid[rowi][coli]. return the winner of the game if it exists (A or B). In case the game ends in a draw return "Draw". If there are still movements to play return "Pending".
You can assume that moves is valid (i.e., it follows the rules of Tic-Tac-Toe), the grid is initially empty, and A will play first.
\n
Example 1:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/09/22/xo1-grid.jpg\")
\n\nInput: moves = [[0,0],[2,0],[1,1],[2,1],[2,2]]\nOutput: "A"\nExplanation: A wins, they always play first.\n\n\n
Example 2:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/09/22/xo2-grid.jpg\")
\n\nInput: moves = [[0,0],[1,1],[0,1],[0,2],[1,0],[2,0]]\nOutput: "B"\nExplanation: B wins.\n\n\n
Example 3:
\n![\"\"](\"https://assets.leetcode.com/uploads/2021/09/22/xo3-grid.jpg\")
\n\nInput: moves = [[0,0],[1,1],[2,0],[1,0],[1,2],[2,1],[0,1],[0,2],[2,2]]\nOutput: "Draw"\nExplanation: The game ends in a draw since there are no moves to make.\n\n\n
\n
Constraints:
\n\n1 <= moves.length <= 9moves[i].length == 20 <= rowi, coli <= 2moves.moves follow the rules of tic tac toe.Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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