一个判断就好了
```cpp
#include<bits/stdc++.h>
using namespace std;
string s;
int main(){
cin>>s;
int sum=(s[0]-'0')*1+(s[2]-'0')*2+(s[3]-'0')*3+(s[4]-'0')*4+(s[6]-'0')*5+(s[7]-'0')*6+(s[8]-'0')*7+(s[9]-'0')*8+(s[10]-'0')*9;
sum%=11;
if (s[12]==(sum==10?'X':sum+'0')) cout<<"Right";
else { s[12]=(sum==10?'X':sum+'0'); cout<<s; }
return 0;
}
```
by _YTY_ @ 2023-09-06 19:13:18
@[joker__wang](/user/411060)
给你的代码改了一下
```
#include<bits/stdc++.h>
using namespace std;
char a[100];
int t,l=1;
int main()
{
cin>>a;
for(int i=0;i<=strlen(a)-2;i++)
{
if(a[i]=='-')
{
continue;
}
else
{
t+=(a[i]-'0')*l;
l++;
}
}
if(t%11==a[strlen(a)-1]-'0')
{
cout<<"Right";
}
else if(t%11>=10 && a[strlen(a)-1]=='X')
{
cout<<"Right";
}
else
{
for(int i=0;i<=strlen(a)-2;i++)
{
cout<<a[i];
}
if(t%11==10)
{
cout<<"X";
}
else
{
cout<<t%11;
}
}
}
```
【汗】
by so_find_skind @ 2023-09-06 19:15:25
@[zhezhikongdanruxue](/user/756179) 大佬，-‘0’是什么意思
by joker__wang @ 2023-09-07 18:34:33
@[joker__wang](/user/411060)
就是把一个字符型的数字改成数字型的数字，因为实际上 $'1'=49$ 而非 $1$
by so_find_skind @ 2023-09-07 21:33:29
@[zhezhikongdanruxue](/user/756179) 谢谢
by joker__wang @ 2023-09-09 17:26:51