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)}"  # 只要一个单引号
    def __add__(self,other):
        return Coordinate(self.x + other.x,self.y + other.y)  # 运算符重载
x1,y1 = list(map(int,input().split()))  # 变量居然可以这么赋值
x2,y2 = list(map(int,input().split()))
c1 = Coordinate(x1,y1)
c2 = Coordinate(x2,y2)
print(c1.__add__(c2).__str__())