Untitled

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back

void solve()
{
    ll n;
    cin>>n;
    ll a[n],b[n];
    for(int i=0;i<n;i++)cin>>a[i];
    for(int i=0;i<n;i++)cin>>b[i];

    sort(a,a+n);
    sort(b,b+n);

    ll l=0,r=n,ans=0;
    while(l<=r)
    {
        ll mid=(l+r)/2;
        // n-mid-1
        bool cd=1;
        for(int i=n-mid;i<n;i++)
        {
            if(b[i]<a[i-n+mid])cd=0;
        }
        if(cd){
            l=mid+1;
            ans=mid;
        }
        else{
            r=mid-1;
        }
    }
    ans=n-ans;
    cout<<(n*(n+1))/2-(ans*(ans+1))/2<<endl;

}
int main()
{
    ios_base::sync_with_stdio(false); 
    cin.tie(0);cout.tie(0);
    ll t=1;
    cin>>t;
    while(t--)solve();
}