7-1 sdut-oop-2 Shift Dot(类和对象）python

class Point:
    x=0
    y=0
    def __init__(self,xx,yy):
        self.x=xx
        self.y=yy
    def move(self,x1,y1):
       self.x+=x1
       self.y+=y1
    def toString(self):
        return "({},{})".format(self.x,self.y)    
while True:
    try:
        x,y,n=map(int,input().split())
        a=Point(x,y)
        for i in range(n):
            x1,y1=map(int,input().split())
            a.move(x1,y1)
        print(a.toString())
    except:
        break