Types: H: int, W: int, N: int, X: List[int], Y: List[int]

Ranges: 1 ≤ H, W ≤ 2×10^5, 0 ≤ N ≤ 2×10^5, 1 ≤ X_i ≤ H, 1 ≤ Y_i ≤ W

Addtl Info: If i ≠ j, (X_i, Y_i) ≠ (X_j, Y_j), (X_i, Y_i) ≠ (1, 1)