print那行输出格式有问题 帮你小改了一下
```python
s=[]
for i in range(12):
s.append(int(input()))
ck=0
mm=0
month=1
for i in s:
ck+=300
ck-=i
if ck<0:
print('-%d'%int(month))
break
mm+=(int(ck//100))
ck=ck%100
month+=1
else :
mm=mm*120+ck
print(mm)
```
by ytt02_11 @ 2023-03-10 20:07:58
@[ytt02_11](/user/594967) 感激不尽qwq
by jingyan2023 @ 2023-03-18 16:25:23