#include <bits/stdc++.h>

#define rep(i, n) for(int i = 0; i < (int)(n); ++i)
#define rep1(i, n) for(int i = 1; i <= (int)(n); ++i)
#define memset(arr, x) memset(arr, x, sizeof(arr))

using namespace std;
using i64 = long long;
    
constexpr int inf = 1.01e9;
constexpr i64 llinf = 1.01e18;
  namespace io {
	const int SIZE = (1 << 21) + 1;
	char ibuf[SIZE], *iS, *iT, obuf[SIZE], *oS = obuf, *oT = oS + SIZE - 1, c, qu[55]; int f, qr;
	// getchar
	#define gc() (iS == iT ? (iT = (iS = ibuf) + fread (ibuf, 1, SIZE, stdin), (iS == iT ? EOF : *iS ++)) : *iS ++)
	// print the remaining part
	inline void flush () {
		fwrite (obuf, 1, oS - obuf, stdout);
		oS = obuf;
	}
	// putchar
	inline void putc (char x) {
		*oS ++ = x;
		if (oS == oT) flush ();
	}
	template<typename A>
	inline bool read (A &x) {
		for (f = 1, c = gc(); c < '0' || c > '9'; c = gc()) if (c == '-') f = -1;else if(c==EOF)return 0;
		for (x = 0; c <= '9' && c >= '0'; c = gc()) x = x * 10 + (c & 15); x *= f;
		return 1;
	}
	inline bool read (char &x) {
		while((x=gc())==' '||x=='\n' || x=='\r');
		return x!=EOF;
	}
	inline bool read(char *x){
		while((*x=gc())=='\n' || *x==' '||*x=='\r');
		if(*x==EOF)return 0;
		while(!(*x=='\n'||*x==' '||*x=='\r'||*x==EOF))*(++x)=gc();
		*x=0;
		return 1;
	}
	template<typename A,typename ...B>
	inline bool read(A &x,B &...y){
		return read(x)&&read(y...);
	}
	template<typename A>
	inline bool write (A x) {
		if (!x) putc ('0'); if (x < 0) putc ('-'), x = -x;
		while (x) qu[++ qr] = x % 10 + '0',  x /= 10;
		while (qr) putc (qu[qr --]);
		return 0;
	}
	inline bool write (char x) {
		putc(x);
		return 0;
	}
	inline bool write(const char *x){
		while(*x){putc(*x);++x;}
		return 0;
	}
	inline bool write(char *x){
		while(*x){putc(*x);++x;}
		return 0;
	}
	template<typename A,typename ...B>
	inline bool write(A x,B ...y){
		return write(x)||write(y...);
	}
	//no need to call flush at the end manually!
	struct Flusher_ {~Flusher_(){flush();}}io_flusher_;
}
using io :: read;
using io :: putc;
using io :: write;

void solve(){
  int n;
  read(n);
  vector<int> a(n);
  int cnt = 0;
  rep(i, n){ 
    read(a[i]);
    if(a[i]) cnt++;
  }
  int cnt2 = n - cnt, x = 0, y = 0;
  rep(i, n){
    if(a[i] == 0){
      x++;
      while(i < n && a[i] == 0) i++;
      --i;
    }else{
      y++;
      while(i < n && a[i] == 1) i++;
      --i;
    }
  }
  write((cnt >= x && y <= x) || (cnt2 >= y && x <= cnt) ? "Yes\n" : "No\n");
}

signed main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);

  int tt = 1;
  read(tt);
  rep(i, tt) solve();
}