A

#include <bits/stdc++.h>

using namespace std;

#define ll     long long
#define _test   int _TEST; cin>>_TEST; while(_TEST--)
#define ff     first
#define ss     second
#define pb     push_back

int main()
{
    _test
    {
        int n, m, k;
        cin>>n>>m>>k;

        vector<int> a(n), b(m);

        for(auto &e: a)     cin>>e;
        for(auto &e: b)     cin>>e;

        int ans = 0;

        for(int i=0; i<n; i++)
        {
            for(int j=0; j<m; j++)
                ans += (a[i]+b[j] <= k);
        }

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