C :

#include<stdio.h>
int main()
{
	int i1,i2,i3,sum,t;
	char x;
	while(scanf("%d-%d-%d-%c",&i1,&i2,&i3,&x)==4)
	{
		sum=0;
		sum+=i1+2*(i2/100)+3*(i2/10%10)+4*(i2%10);
		sum+=5*(i3/10000)+6*(i3/1000%10)+7*(i3/100%10)+8*(i3/10%10)+9*(i3%10);
		if(x=='X')t=10;else t=x-'0';
		if(sum%11==t)printf("Right\n");
		else 
		if(sum%11<10)printf("%d-%d-%d-%d\n",i1,i2,i3,sum%11);
		else printf("%d-%d-%d-X\n",i1,i2,i3);
	}
	return 0;
}

C++ :

#include <bits/stdc++.h>
using namespace std;
int main()
{
	//freopen("F:\\TestFiles\\test.in","r",stdin);
	//freopen("F:\\TestFiles\\test2.out","w",stdout);
	char as[20];
	while(gets(as)!=NULL){
		int ans=0;
		int num=1;
		for (int i=0;i<12;i++){
			if (as[i]=='-') continue;
			ans+=(as[i]-'0')*num;
			num++;
		}
		
		int ans2=0;
		if (as[12]=='X') ans2=10;
		else ans2=as[12]-'0';
		
		ans=ans%11;
		ans2=ans2%11;
		
		if (ans2==ans) printf("Right\n");
		else {
			for (int i=0;i<12;i++){
				printf("%c",as[i]);
			}
			
			if (ans<10) printf("%d\n",ans);
			else printf("X\n");
		}
		
	}
	return 0;
}