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


int main()
{
    long long int n,sum,total,ans,spaceup,t=0,spacedown,i,j,k,rem,a,b,c,d,gcd;
    string sfd,sfu;
    while(cin>>n && n)
    {
        cout<<"Case "<<++t<<":"<<endl;
        int flag=0;
        sum=0;
        ans=0;
        for(i=0; i<n; i++)
        {
            cin>>d;
            sum+=d;
        }

        if(sum<0)
        {
            flag=1;
            sum*=-1;
        }
    //   cout<<sum<<endl;

        gcd=__gcd(sum,n);
    //    cout<<gcd<<endl;
       //bad diya dekhte hbe
        sum/=gcd;
        n/=gcd;
  //   cout<<"sum by gcd"<<sum<<endl;
  //   cout<<"n by gcd"<<n<<endl;
        if(sum%n==0)
        {
            if(flag==1)
                cout<<"- ";
            ans=sum/n;
            cout<<ans<<endl;
        }

        else
        {
            sfu.clear();
            sfd.clear();
            rem=sum%n;
          //  cout<<"rem: "<<rem<<endl;
            sum=sum/n;
          //   cout<<"sum: "<<sum<<endl;
            a=0,b=0;
            if(flag==1)
            {
                sfu+="  ";
            }
         //   cout<<"st for up"<<sfu<<endl;
           total=sum;
           while(total>0)
           {
               sfu+=' ';
               total/=10;
           }
        //  cout<<"st for up "<<sfu<<endl;
           total=n;

           while(total>0)
           {
               b++;
               total/=10;
           }
        //   cout<<"B is"<<b<<endl;
           total=rem;

           while(total>0)
           {
               a++;
               total/=10;
           }
         //  cout<<"A IS:"<<a<<endl;
           a=b-a;
       //    cout<<"st for up "<<sfu<<endl;
           sfd+=sfu;
        //   cout<<"st for down "<<sfd<<endl;
           while(a--)
            sfd+=' ';
     //    cout<<"st for down "<<sfd<<endl;
           cout<<sfd<<rem<<endl;

           if(flag==1)
           {
               cout<<"- ";
           }
           if(sum!=0)
            cout<<sum;

           while(b--)
           {
               cout<<"-";
           }
           cout<<endl;
           cout<<sfu<<n<<endl;
        }


    }
    return 0;
}