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

int main() {
    // https://www.codechef.com/problems/EQDIFFER
    int t;
    cin>>t;
    while(t--){
        ll n;
        cin>>n;
        ll a[n];
        map <ll,ll> mp;
        set <ll> s;
        for (ll i=0; i<n; i++){
            cin>>a[i];
            mp[a[i]]++;
            s.insert(a[i]);
        }
        if (n<=2 || s.size()==1) cout<<0<<"\n";
        else {
            tuple <ll,ll> p[n];
            for (int i=0; i<n; i++){
                get<1>(p[i])=a[i];
                get<0>(p[i])=mp[a[i]];
            }
            sort(p,p+n);
            cout<<n-get<0>(p[n-1])<<"\n";

        }
    }
    return 0;
}