#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;
string str;
int sum;
char tmp;
int main() {
cin >> str;
string sub;
for (int i = 0, j = 1; i + 1< str.size(); ++ i) {
if (str[i] == '-') continue;
sum += (str[i] - '0') * j;
j ++;
}
sum %= 11;
tmp = 'X';
if (sum < 10) tmp = '0' + sum;
if (str.back() == tmp) puts("Right");
else {
str.back() = tmp;
cout << str << endl;
}
return 0;
}