```
class TicTacToe {
private int[][] rows, cols;
private int[] diag1, diag2;
private int win = 0, n = 0;
/** Initialize your data structure here. */
public TicTacToe(int n) {
this.n = n;
this.win = 0;
diag1 = new int[2];
diag2 = new int[2];
rows = new int[2][n];
cols = new int[2][n];
}
/** Player {player} makes a move at ({row}, {col}).
@param row The row of the board.
@param col The column of the board.
@param player The player, can be either 1 or 2.
@return The current winning condition, can be either:
0: No one wins.
1: Player 1 wins.
2: Player 2 wins. */
public int move(int row, int col, int player) {
if(win != 0) return win;
if(++rows[player - 1][row] == n) win = player;
if(++cols[player - 1][col] == n) win = player;
if(row == col && ++diag1[player - 1] == n) win = player;
if(row + col == n - 1 && ++diag2[player - 1] == n) win = player;
return win;
}
}
```