#!/usr/bin/python3

def main():
	x=None
	y=None
	try:
		x=input("Δώσε x:")
		y=input("Δώσε y:")
		if x.isnumeric() and y.isnumeric():
			x=eval(x)
			y=eval(y)
		z=x+y
		print (z)
	except Exception as e:
		print ("Εξαίρεση:"+str(e))

	finally:
		print ("go on")

if __name__=="__main__":
	main()