题解 | 重载运算

class Coordinate:
    def __init__(self, x, y):
        self.x = x
        self.y = y

    def __str__(self):
        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)

c3 = c2.__add__(c1)
print(c3)