#!/usr/bin/python3
def main():
        x=None
        y=None
        try:
             x=input("Δωσε x:")
             y=input("Δώσε y:")
             z=eval(x)+eval(y)
             

        except Exception as e:
              print ("Exception 1:",str(e))
        #      exit (1)

        finally:
                print ("go on")

if __name__=="__main__":
        main()