模拟题

#include<iostream>
#include<algorithm>

using namespace std;
const int N = 50;
char arr[N];
int main () {
    int i = 0,ans = 0,t = 1;
    cin >> arr;
    while (i < 12) {
        if (arr[i] >= '0' && arr[i] <= '9') {
            ans += (arr[i] - '0') * t;
            t++;
        }
        i++;
    }
    if (ans % 11 == 10) {
        char c = 'X';
        if (arr[12] == c)   cout << "Right" << endl;
        else {
            arr[12] = c;
            cout << arr << endl;
        }
    } else {
        if (ans % 11 == arr[12] - '0') cout << "Right" << endl;
        else {
            arr[12] = ans % 11 + '0';
            cout << arr << endl;
        }
    }
    return 0;
}