#include <bits/stdc++.h>
#include <random>
#include <chrono>
using namespace std;
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef pair<double,double> pdd;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

template<typename T> void _do(T x){cerr<<x<<"\n";}
template<typename T,typename ...U> void _do(T x,U ...y){cerr<<x<<", ";_do(y...);}
#define dbg(...) cerr<<#__VA_ARGS__<<" = ";_do(__VA_ARGS__);

const int MOD1=1e9+7;
const int MOD2=998244353;
const ll INF=3e18;

ll fpow(ll a,ll b,ll m)
{
    if(!b) return 1;
    ll tmp=1;
    for(ll cur=a;b;b>>=1,cur=cur*cur%m) if(b&1) tmp=tmp*cur%m;
    return tmp;
}
ll inv(ll a,ll m) {return fpow(a,m-2,m);}

#define MottoHayaku ios::sync_with_stdio(false);cin.tie(0);
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define F first
#define S second
#define pb push_back
#define uni(c) c.resize(distance(c.begin(),unique(c.begin(),c.end())))
#define unisort(c) sort(c.begin(),c.end()),uni(c)


void solve()
{
    ll n;
    cin>>n;
    vector<ll> a(n);
    rep(i,n) cin>>a[i];
    if(a[0]!=a.back()) cout<<"Yes\n";
    else
    {
        bool can=0;
        rep(i,n-1) if(a[i]!=a[0]&&a[i+1]!=a[0]) can=1;
        if(can) cout<<"Yes\n";
        else if(a[0]==1) cout<<"No\n";
        else
        {
            ll cnt=0;
            rep(i,n) cnt+=(a[i]==1);
            if(cnt>=4) cout<<"Yes\n";
            else cout<<"No\n";
        }
    }
}

signed main()
{
    MottoHayaku

    int t;
    cin>>t;
    //t=1;
    while(t--)
    {
        solve();
    }
}