class Arithmetics: 
    def __init__(self,n1,n2):
        self.first=n1
        self.second=n2
    def sub (self,other): 
            print('{}+{}i'.format(self.x+other.x,self.y+other.y))
    def mult (self,other): 
           print('{}+{}i'.format(self.x*other.x-self.y*other.y,self.x*other.x+self.y*other.y))
    def add (self,other): 
          print('{}+{}i'.format(self.x+other.x,self.y+other.y))
    def dev (self,other): 
            print('{}+{}i'.format((self.x*other.x+self.y*other.y)/(other.x**2+other.y**2),(self.x*other.x-self.y*other.y)/(other.x**2+other.y**2)))   
 
c1 = Arithmetics(1,2)
c2 = Arithmetics(3,4)
print(c1-c2)
print(c1*c2)
print(c1+c2)
print(c1/c2)
 

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