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459 B

#include<iostream>
#include <stdlib.h>
using namespace std;
int main() {
char a[13];
int sum=0;
for(int i=0; i<13; i++) {
cin >>a[i];
}
int k=0;
for(int i=0; i<11; i++) {
if(a[i]!='-') {
k++;
int b=a[i]-48;
sum+=b*k;
}
}
int c=sum%11;
char c2;
if(c==10) {
c2='X';
} else {
c2=c+48;
}
if(c2==a[12]) {
cout<<"Right"<<endl;
return 0;
} else {
a[12]=c2;
for(int i=0; i<13; i++) {
cout<<a[i];
}
}
return 0;
}