# basice thread creation,
# synchronization, etc.
import threading
import time
def f1 () :
        time.sleep(1)
        print ( "hello" )
def f2 ():
        print ( "world" )
t1=threading.Thread(target=f1)
t2=threading.Thread(target=f2)
print("oviedo")
t1.start()
print("vigo")
t2.start()
print("santander")