#include<bits/stdc++.h>
#define lc (p<<1)
#define rc (p<<1|1)
#define ll long long
#define ull unsigned long long
#define Tp template<typename T>
#define Ts template<typename T,typename... _T>
char buf[1<<20],*p1=buf,*p2=buf;
#define getchar() (p1==p2&&(p2=buf+fread(p1=buf,1,1<<20,stdin),p1==p2)?EOF:*p1++)
Tp inline void read(T& x){
    x=0;char c=getchar();bool f=0;
    for(;c<48||c>57;c=getchar())c=='-'&&(f=1);
    for(;c>47&&c<58;c=getchar())x=(x<<1)+(x<<3)+(c^48);
    f&&(x=-x);
}
Ts inline void read(T& x,_T&... y){read(x),read(y...);}
using namespace std;
const int N=3e6+5;
int a[N];
int main(){
	int T;read(T);
	while(T--){
		int n;read(n);
		for(int i=1;i<=n;i++)read(a[i]);
		if(!(n&1)){
			for(int i=1;i<n;i++){
				if(a[i]==0||a[i+1]==0){
					if(a[i]==1||a[i+1]==1)a[i]=2;
					else a[i]=1;
				}
				else a[i]=0;
			}
			n--;
		}
		if(a[(n+1)>>1]>=2&&(n==1||(a[1]==0&&a[n]>0)||(a[1]>0&&a[n]==0)))puts("Yes");
		else puts("No");
	}
	return 0;
}

照着打的，但错了