#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int Mod=998244353;
 
void solve() {
    int n;
    cin >> n;
    vector<int> a(n);
    for(int i=0;i<n;i++){ 
    cin >> a[i];
    if(a[i]<=0) a[i]=-a[i];}
    int k = a[0];
    sort(a.begin(),a.end());
    for(int i=0;i<n/2+1;i++){
    	if(a[i]==k){
    		cout << "YES\n";
    		return;
    	}
    }
    cout << "NO\n";
}
 
int main(){ 
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
 
    int t;
    cin >> t;
    while (t--) solve();
 
 
    return 0;
}
 

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7
3
2 3 1
5
1 2 3 4 5
4
4 2 0 -5
4
-5 0 4 3
4
-10 8 3 2
1
1
10
9 1000 -999 -13 456 -223 23 24 10 0