// Author : Kamonasish Roy (Bullet)
// Time : 2025-04-08 20:42:54

#include<bits/stdc++.h>
using namespace std;
const long long M=5e5,MOD=1e9+7;
typedef long long ll;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int t=1;
    cin>>t;
    while(t--){
    int n;
    cin>>n;
    vector<int>a(n);
    deque<int>d;
    for(int &i:a)cin>>i;
    int l=0,r=n-1;
    while(l<=r){
          int mn=min(a[l],a[r]);
          int mx=max(a[r],a[l]);
          if(d.empty()){
                d.push_back(a[l]);
                l++;
          }
          else{
                int f=d.front();
                int p=d.back();
                if(f>=mx){
                      d.push_front(mx);
                      if(a[r]==mx)r--;
                      else l++;
                }
                else if(p<=mn){
                      d.push_back(mn);
                      if(a[r]==mn)r--;
                      else l++;
                }
                else if(f>=a[l] or f>=a[r]){
                      if(f>=a[l]){
                            d.push_front(a[l]);
                            l++;
                      }
                      else{
                            d.push_front(a[r]);
                            r--;
                      }
                }
                else if(p<=a[l] or p<=a[r]){
                      if(p<=a[l]){
                            d.push_back(a[l]);
                            l++;
                      }
                      else{
                            d.push_back(a[r]);
                            r--;
                      }
                }
                else break;
          }
    }
    vector<int>b;
    while(!d.empty()){
          b.push_back(d.front());
          d.pop_front();
    }
    sort(a.begin(),a.end());
    cout<<(a==b?"YES\n":"NO\n");
    
    	
    	
    	}
    	
    	   
    return 0;
 
}