class point:
    def __init__(self,x=0,y=0):
        self.x=x
        self.y=y
    def __str__(self):
        return ("{0},{1}".format(self.x,self.y))
    def __add__(self,other):
        x=self.x+other.x
        y=self.y+other.y
        return (x,y)
        
p=point(2,3)
p1=point(-1,5)
                
print(p+p1)    
        
