Types: N: int, x: List[int], y: List[int]  
Ranges: 1 ≤ N ≤ 200, 0 ≤ x_i, y_i < 10^4, x_i ≠ x_j or y_i ≠ y_j  
Addtl Info: Coordinates (x_i, y_i) are integers