A

#include <bits/stdc++.h>

using namespace std;

#define ll     long long
#define pb     push_back

int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;

        vector<int> a(n);
        for(auto &e: a)     cin>>e;

        int ans = 0;
        int one = 0;
        int cnt = count(a.begin(), a.end(), 1);

        for(auto e: a)
        {
            if(one)        ans += (e == 0);
            one += (e == 1);

            if(one == cnt)      break;
        }

        cout<<ans<<"\n";
    }
}