#include<iostream>
#include<string>
using namespace std;
int main(){
    char BOOK[14];
    int a,n=1,result,i;
    cin>>BOOK;
    for(i=0;i<13;i++){
        if(BOOK[i]=='-'){
            continue;
        }
        int BOOK[i];
        result+=(BOOK[i]-'0')*n-'0';
        n++;
    }
    if(result%11==BOOK[14]){
        cout<<"Right"<<endl;
    }else if(result%11==10){
        if(BOOK[13]=='X'){
            cout<<"Right"<<endl;
        }else{
            cout<<BOOK[13];
        }
    }else{
        cout<<BOOK[13];
    }
    return 0;
    
}