LA 3012

#include<bits/stdc++.h>
using namespace std;

int dgtcnt(int k)
{
	int z=0;
	while(k){
		k/=10;
		z++;
	}
	return z;
}

int main()
{
	int n,m,x,total,avg,gd,j=0;
	while(1){
		j++;
		cin>>n;
		if(n==0)
            break;
		total=0;
		for(int i=0;i<n;i++){
			cin>>x;
			total+=x;
		}
		cout<<"Case "<<j<<":"<<endl;
		if(total%n==0){
			if(total<0)
				printf("- ");
			avg=abs(total/n);
			cout<<avg<<endl;
			continue;
		}
		int mcnt=0,avgcnt=0,lcnt=0,hcnt=0,ucnt=0,tcnt=0,tmp;
		if(total<0)
		    mcnt=2;
		total=abs(total);
		avg=total/n;
		m=total%n;
		gd=__gcd(m,n);
		n/=gd;
		m/=gd;
		avgcnt=dgtcnt(avg);
		lcnt=dgtcnt(m);
		hcnt=dgtcnt(n);
		ucnt=hcnt;
		tcnt=mcnt+avgcnt+hcnt;
		tmp=tcnt-lcnt;
		while(tmp--)
			cout<<" ";
		cout<<m<<endl;
		if(mcnt)
		    cout<<"- ";
		if(avgcnt)
		    cout<<avg;
		while(ucnt--)
			cout<<"-";
		cout<<endl;
		tmp=tcnt-hcnt;
		while(tmp--)
			cout<<" ";
		cout<<n<<endl;
	}
	return 0;
}