///HELLO THERE~!
///CREATED BY MD SADMAN MEHEDI SIVAN(IUT CSE-SWE^19)

#include <bits/stdc++.h>

#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define read freopen("blue.txt","r",stdin);
#define write freopen("red.txt","w",stdout);
#define pie 2*acos(0.0);

typedef long long ll;

using namespace std;


int main()

{

   int T;
   cin>>T;

   for(int k=0;k<T;k++)
   {
       cout<<"Case "<<k+1<<": ";

       int n;
       cin>>n;

       set<int>sivan;

       int count=0;
       int x[n+1];
       for(int i=0;i<n;i++)
        cin>>x[i];

       for(int i=0;i<n;i++)
       {
        if(x[i]==2)
        {

            count=count+sivan.size();
            sivan.clear();
        }
        else
        {
            sivan.insert(x[i]);
        }
       }
       cout<<count<<endl;


   }
    return 0;

}