class Coordinate: def __init__(self, x, y) -> None: self.x = x self.y = y def __str__(self) -> str: return f"({self.x}, {self.y})" def __add__(self, other): return Coordinate(self.x + other.x, self.y + other.y) x1, y1 =[int(i) for i in input().split(' ')] x2, y2 =[int(i) for i in inp...