代码如下

#include <bits/stdc++.h>
using namespace std;

string a;
int n , tmp , x;
char mod;

int main()
{
    scanf("%s" , &a);
    for (int i = 0; i < 13; i++)
    {
        if (a[i] == '-') continue;
        x++;
        n = (int)a[i];
        tmp += n * x;
    }
    if (tmp % 11 == 10) mod = 'x';
    else mod = (char)(tmp % 11);
    if (mod == a[12]) printf("Right");
    else
    {
        a[12] = mod;
        printf("%s" , a);
    }
    return 0;
}