#!/usr/bin/python3
def main():
         x=None
         y=None
         try:
                 x=input("Δώσε x:")
                 y=input("Δώσε y:")
                 z=eval(x)+eval(y)
                 print (f'x+y={z}')
         except Exception as e:
                 print ("Exception 1:",str(e))
         #       exit(1)
         finally:
                 print ("go on")
if __name__=="__main__":
         main()