int main(){
//in NOIP Orz
#ifdef PMMMM1
freopen("2.in","r",stdin);
freopen("2.out","w",stdout);
#endif
string a;
cin>>a;
vector<int> b;
b.clear();
FC(i,0,a.length()) if (a[i]!='-') {b.pb((int)a[i]-48);}
int ans=0;
FC(i,0,(int)b.size()-1) ans+=(i+1)*b[i];
ans%=11;
char ansc;
if (ans==10) ansc='X';
else ansc=48+ans;
if (a[a.length()-1]!=ansc){
cout<<a.substr(0,a.length()-1)<<ansc<<endl;
}
else {cout<<"Right"<<endl;}
return 0;
}
