球球大佬解答，为什么只能拿到80分！！！谢谢！！！

#include<iostream>
#include<fstream>
#include <iomanip>
#include <bits/stdc++.h>
#include <math.h>
#include <algorithm>
#include <cstring>
using namespace std;
int main()
{
    char a,b,c,d,e,f,g,h,i,x;
    scanf("%c-%c%c%c-%c%c%c%c%c-%c",&a,&b,&c,&d,&e,&f,&g,&h,&i,&x);
    int k=(a-'0')*1+(b-'0')*2+(c-'0')*3+(d-'0')*4+(e-'0')*5+(f-'0')*6+(g-'0')*7+(h-'0')*8+(i-'0')*9;
    int m=k%11;
    if(m==(x-'0'))cout<<"Right";
    else if(m==10) printf("%c-%c%c%c-%c%c%c%c%c-X",a,b,c,d,e,f,g,h,i);
    else printf("%c-%c%c%c-%c%c%c%c%c-%d",a,b,c,d,e,f,g,h,i,m);
    return 0;
}