python微软序列号

import random
keysn=''
n=int(input())
s=int(input())
random.seed(s)
code='BCEFGHJKMPQRTVWXY2346789'
for i in range(n):
t=''
for j in range(5):
t=t+random.choice(code)
if i==0:
keysn=keysn+t
else:
keysn=keysn+'-'+t
print(keysn)

请问各位盆友们是哪里有问题我的代码