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,a): return (self.x+a.x,self.y+a.y) x1,y1 = list(map(int,input().split())) x2,y2 = list(map(int,input()....