题解 | #重载运算#

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 input().split(' ')]

pt1 = Coordinate(x1, y1)
pt2 = Coordinate(x2, y2)

print(pt1 + pt2)