import threading
import time
x=1
def f1(x):
   for i in range(0,3):
       time.sleep(4)
       x=x+1
       print("Inside f1: x= ",x)
def f2(x):
   for i in range(0,3):
       time.sleep(1)
       x=x-2
       print("Inside f2: x= ",x)
t1=threading.Thread(target=f1,args=(x,))
t2=threading.Thread(target=f2,args=(x,))
t1.start()
t2.start()
print(x)