```
请发代码，这样看不清
```
by DWT8125 @ 2021-02-18 18:10:21
@[wykun1234](/user/484283)
by DWT8125 @ 2021-02-18 18:13:28
```python
s=input().strip()
a=list(s)
for i in a:
if i=='-':
a.remove(i)
sum=0
for j in range(9):
sum+=int(a[j])*(j+1)
if (int(a[9])<10 and sum%11==int(a[9])) or (sum%11==10 and a[9]=='X'):
print("Right")
else:
b=sum%11
if b==10:
print(s[:-1]+'X')
else:
print(s[:-1]+str(b))
```
by wykun1234 @ 2021-02-19 15:41:04
@[AC_chenpeizhe20](/user/390228)
by wykun1234 @ 2021-02-19 15:41:19
@[wykun1234](/user/484283) 我看不懂python啊QAQ……
弱弱问一句：倒数第一行
```
s[:-1]
```
指什么？
by DWT8125 @ 2021-02-19 17:20:36
@[AC_chenpeizhe20](/user/390228)
从开始输出到倒数第一个之前停止，也就是输出到倒数第二个
by wykun1234 @ 2021-02-19 17:40:27
@[wykun1234](/user/484283) 我也是4个RE,你的问题解决了吗
by 一念神魔AQ @ 2021-03-06 13:26:37
@[奋斗阿强](/user/425285)
最后用c语言写了，python总是过不了
by wykun1234 @ 2021-03-07 11:45:28
@[一念神魔AQ](/user/425285) 解决了吗我7个re要死了
by 灰化肥不发黑 @ 2021-10-03 20:56:03