The solution is inspired by the hint. Hope it helps.

Any comment is welcomed.

```
int[] rows;
int[] cols;
int diagonal;
int antiDiagonal;
int size;
/** Initialize your data structure here. */
public TicTacToe(int n) {
this.rows = new int[n];
this.cols = new int[n];
this.diagonal = 0;
this.antiDiagonal = 0;
this.size = 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) {
// updating the rows and cols array, the value stored in each rows[i] or cols[i]
//denotes the sum of values in current row or col
rows[row] += (player == 1) ? 1 : -1;
if(rows[row] == size) return 1;
if(rows[row] == -size) return 2;
cols[col] += (player == 1) ? 1 : -1;
if(cols[col] == size) return 1;
if(cols[col] == -size) return 2;
// Similar to rows or cols
if(row == col)
diagonal += (player == 1) ? 1 : -1;
if(diagonal == size)
return 1;
if(diagonal == -size)
return 2;
if(row + col == size - 1)
antiDiagonal += (player == 1) ? 1 : -1;
if(antiDiagonal == size)
return 1;
if(antiDiagonal == -size)
return 2;
return 0;
}
```