#include<iostream>
using namespace std;
int main()
{
	string a;
	string end = "0123456789X";
	cin >> a;
	int sum = 0;
	int j = 1;
	for (int i = 0; i < 12; i++)
	{
		if (a[i] == '-') continue;
		sum += (a[i] - '0') * j;
		j = j++;
	}
	if (a[12] == end[sum % 11 ]) cout << "Right" << endl;
	else {
		a[12] = end[sum % 11 ]; cout << a << endl;
	}
	return 0;
}