模拟就好啦
#include <iostream>
using namespace std;
int main()
{
string s;
cin>>s;
int ok = 0;
int cnt = 0;
for(int i=0;i<s.length()-1;i++)
{
if(s[i]>='0' && s[i] <= '9')
ok += (s[i]-'0')*(++cnt);
}
ok%=11;
if(s[s.length()-1] == 'X')
{
if(ok != 10)
printf("%s%c",s.substr(0,s.length()-1).c_str(),ok+'0');
else
printf("Right");
}
else
{
if(ok == s[s.length()-1]-'0')
{
printf("Right");
}
else if(ok != 10)
printf("%s%c",s.substr(0,s.length()-1).c_str(),ok+'0');
else
printf("%s%c",s.substr(0,s.length()-1).c_str(),'X');
}
return 0;
}