#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,j)  for(int i=0; i<j; i++)
#define vi vector<int>
#define vvi vector<vector<int>>
#define sr(a) sort(a.begin(),a.end())

signed main(){
  int t; cin>>t;
  rep(i,t){
    int n; cin>>n;
    vi h(n);
    rep(i,n){
      cin>>h[i];
    }
    if(h[0]>h[1]&&h[1]<h[2]&&h[2]>h[3]&&h[3]<h[4]){
      cout<<"Yes"<<endl;
    }
    else{
      cout<<"No"<<endl;
    }
  }
}