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

void solve(){
  int N;
  cin>>N;
  vector<int> A(N);
  for(int i=0;i<N;++i){ cin>>A[i]; }
  if(A[0]!=A[N-1]){
    cout<<"Yes"<<endl;
    return;
  }
  if(A[0]==1 && A[N-1]==1){
    for(int i=0;i<N;++i){
      A[i]=1-A[i];
    }
  }
  for(int i=0;i<N-1;++i){
    if(A[i]==1 && A[i+1]==1){
      cout<<"Yes"<<endl;
      return;
    }
  }
  int C=count(A.begin(),A.end(),1);
  cout<<(C>=4?"Yes":"No")<<endl;
}

int main(){
  int T;
  cin>>T;
  while(T--){
    solve();
  }
}