#include <iostream>
#include <map>
using namespace std;
map<int, char> mp;
void init(){
    for(int i = 0; i < 9; i ++ )    mp[i] = '0' + i;
    mp[10] = 'X';
}
int main(){
    init();
    string s;   cin >> s;
    int sum = 0, k = 1;
    for(int i = 0; i < s.size() - 1; i ++ ){
        if(s[i] == '-') continue;
        sum += (s[i] - '0') * (k ++ ); 
    }
    sum %= 11;
    if(mp[sum] != s[s.size() - 1]){
         s[s.size() - 1] = mp[sum];
         cout << s << endl;
    }else   cout << "Right" << endl;
    return 0;
}