#!/usr/bin/python3
def main():
    	try:
    	    a=input("Dose a:")
    	    a=eval(a)
    	    b=input("dose b:")
    	    b=eval(b)
    	    print (f'Apotelesma={a+b}')
	 except Exception as e:
	    print (f'Error {e}')

	    
if __name__=="__main__":
        main()