import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String str = scanner.next();
        int sum = 0;
        char ch ;
        //计算sum,注意最后一个字符不用计算
        for(int i = 0,j = 1;i < str.length() - 1;i++){
            if(str.charAt(i) != '-'){
               sum += (str.charAt(i) - '0') * j;
                j++;
            }
        }
        if(sum % 11 == 10){
            ch = 'X';
        }else{//int型与char型运算后结果是int型，故这里需要强转会char型
            ch = (char)(sum % 11 +'0');
        }
        if(ch == str.charAt(str.length() -1)){
            System.out.println("Right");
        }else{
            System.out.println(str.substring(0,str.length() - 1) + ch);
        }
    }
}