#include <iostream> 
using namespace std;
int main(){
    string a;
    cin>>a;
    int gg=1,sum=0;
    for(int i=0;i<=a.size()-3;i++){
		if(a[i] != '-'){
        sum += (a[i]-'0') * gg;
        gg++;
    	}
	}
    if(sum % 11 == a[a.size()-1] - '0' and (sum % 11 == 10 and a[a.size()-1] == 'X')){
    	cout<<"Right";
	}
    else
    {
        for(int i=0;i<a.size()-1;i++){
        	cout<<a[i];
		}
        if(sum % 11 != 10){
        	printf("%d",sum % 11);
		}
        else {
        	printf("X");
		}
    }
    return 0;
}