class Complex(object):
    
    def __init__(self, real, imaginary):
        super().__init__()
        self.real = real
        self.imaginary = imaginary
        
    def __add__(self, no):
        return str(Complex(self.real + no.real, self.imaginary + no.imaginary))
        
    def __sub__(self, no):
        return str(Complex(self.real - no.real, self.imaginary - no.imaginary))
        
    def __mul__(self, no):
        return str(Complex((self.real * no.real) - (self.imaginary * no.imaginary) ,
                 (self.real * no.imaginary) + (self.imaginary * no.real)))
         
    def __truediv__(self, no):
        return str(Complex(((self.real * no.real) + (self.imaginary * no.imaginary)) / (no.imaginary**2 + no.real**2),((self.imaginary * no.real) - (self.real * no.imaginary) ) / (no.imaginary**2 + no.real**2)))
        
    def mod(self):
        return str(Complex((self.real**2 + self.imaginary**2)**0.5,0))