#include<bits/stdc++.h>
using namespace std;
int main(){
    string str;
    cin >> str;
    int sum=0;
    for (int i = 0; j = 1;i<str.size()-1;i++)
        if(str[i]!='-'){
            sum += (str[i] - '0') * j;
            j++;
        }
    sum %= 11;

    char c = 'X';
    if(sum<10)c='0'+sum;
    if (c == str.back()) puts("Right");
    else{
        str.back() = c;
        cout << str << endl;
    }
    return 0;
}