def randomstr1():
    randomstr = ''
    for i in range(16):
        randomstr = (randomstr + random.choice('0123456789'))
    randomstr += '-'
    for i in range(16):
        randomstr = (randomstr + random.choice('0123456789'))
    return randomstr
def randomstr1():
    randomstr = 
    for i in range(16):
        randomstr = (randomstr + random.choice('0123456789'))
    randomstr += '-'
    for i in range(16):
        randomstr = (randomstr + random.choice('0123456789'))
    return randomstr