U

#include <stdio.h>
int main()
{
 char a[20]={0},n1;
 int i,m,n;
 for (i=0;i<=12;i++){
  scanf ("%c",&a[i]);
 }
  m=(a[0]-'0')+2*(a[2]-'0')+3*(a[3]-'0')+4*(a[4]-'0')+5*(a[6]-'0')+6*(a[7]-'0')+7*(a[8]-'0')+8*(a[9]-'0')+9*(a[10]-'0');
  n=m%11;
  n1=n+'0';
  if (n==10) n1='X';
  if(n!=a[12]-'0'){
   a[12]=n1;
   printf("%s",a);
  }
  else
  printf ("Right");

 return 0;
}