op.py

'''class cse:
    def __init__(self,name,rno):
        self.n=name
        self.roolno=rno
        print("this is constructor")
        print(name,rno)
    def fun(self):
        print("this is function")
o=cse("siri",40)
s1=cse("t",30)
s2=cse("v",50)
o.fun()
cse.fun(o)'''


'''class circle:
    def __init__(self,radius):
         self.r=radius
    def printing(self):
        print(3.142*self.r*self.r)
class rectangle:
    def __init__(self,length,breadth):
        self.l=length
        self.b=breadth
    def printing(self):
        print(self.l*self.b)
l=float(input())
b=float(input())
r=float(input())
o=circle(r)
o1=rectangle(l,b)
o.printing()
o1.printing()'''

'''class royalenfield:
    def __init__(self,name,color,mileage):
        self.n=name
        self.c=color
        self.m=mileage
r1=royalenfield("xyz","black",123)
r2=royalenfield("xut","black",456)
r3=royalenfield("gyu","red",120)
print(r1.n,r1.c,r1.m)
print(r2.n,r2.c,r2.m)
print(r3.n,r3.c,r3.m)'''