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 = map(int,input().split())
x2,y2 = map(int,input().split())

c1 = Coordinate(x1,y1)
c2 = Coordinate(x2,y2)
print(c1.__add__(c2))