80分，求调

#include <bits/stdc++.h>
using namespace std;
long long sum;
string s;
int main(){
    cin >> s;
    for(long long i = 0,j = 1;i < s.size() - 1;i++){
        if(s[i] == '-'){
            continue;
        }
        sum += (s[i] - '0') * j++;
    }
    sum %= 11;
    if(sum == s[s.size() - 1] - '0'){
        cout << "Right";
    }else{
        for(long long i = 0;i < s.size() - 1;i++){
            cout << s[i];
        }
        if(sum == 10){
            cout << "X";
        }else{
            cout << sum;
        }
    }
    return 0;
}