class Complex(object):
    def __init__(self, real, imaginary):
        self.real = real
        self.imaginary = imaginary
        
    def __add__(self, no):
        return Complex(self.real+no.real, self.imaginary+no.imaginary)
        
    def __sub__(self, no):
        return Complex(self.real-no.real, self.imaginary-no.imaginary)
        
    def __mul__(self, no):
        c1 = complex(self.real, self.imaginary)
        c2 = complex(no.real, no.imaginary)
        res = c1 * c2
        
        return Complex(res.real, res.imag)

    def __truediv__(self, no):
        c1 = complex(self.real, self.imaginary)
        c2 = complex(no.real, no.imaginary)
        res = c1/c2
        
        return Complex(res.real, res.imag)

    def mod(self):
        return Complex(math.sqrt(self.real**2 + self.imaginary**2), 0)