#include<bits/stdc++.h>
using namespace std;
string s;
int main(){
	int n=0,a=1;
	cin>>s;
	for(int i=0;i<11;i++){
		if(s[i]=='-') continue;
		n+=(s[i]-'0')*a;
		a++;
	}
	n%=11;
	if(s[12]==n+'0' or s[12]=='X' and n==10) cout<<"Right";
	else{
		for(int i=0;i<12;i++) cout<<s[i];
		if(n==10) cout<<'X';
		else cout<<n;
	}
}