#include <vector> 
#include <list> 
#include <map> 
#include <set> 
#include <deque> 
#include <queue> 
#include <stack> 
#include <bitset> 
#include <algorithm> 
#include <functional> 
#include <numeric> 
#include <utility> 
#include <sstream> 
#include <iostream> 
#include <iomanip> 
#include <cstdio> 
#include <cmath> 
#include <cstdlib> 
#include <cctype> 
#include <string> 
#include <cstring> 
#include <ctime> 

using namespace std;

#define _int64 long long

int a[10000];

int main()
{
  int i,l,t,n,ans;
  scanf("%d",&t);
  for (l=0;l<t;l++)
  {
    scanf("%d",&n);
    for (i=0;i<n;i++)
      scanf("%d",&a[i]);
    ans=0;
    for (i=n-1;i>=0;i--)
    {
      if (ans==0) ans=1;
      else
      {
        if (a[i]>1) ans=1;
        else ans=0;
      }
    }
    if (ans==1) printf("Yes\n");
    else printf("No\n");
  }
}