# Detect a K-in-a-Row Win on a Rectangular Board Implement `winning_move(board, row, col, k)` after a valid move has placed a player's nonzero integer token at `(row, col)`. Return `true` iff that move creates at least `k` consecutive equal tokens horizontally, vertically, or on either diagonal. Constraints: `1 <= rows, cols <= 1000`; `1 <= k <= max(rows, cols)`. Inspect only lines through the last move and use `O(1)` extra space. ```hint Count both directions For each of four axes, combine the matching run on each side with the last move. ```