for i in range(int(input())):
	n = int(input())
	cnto = sum(list(map(lambda x: int(x) % 2, input().split())))
	print('YES' if cnto == 0 or cnto == n else 'NO')

for i in range(int(input())):
	n = int(input())
	s = list(map(int, input().split()))
	ok = False
	for i in range(n):
		for j in range(i + 2, n):
			if s[i] == s[j]: ok = True
	print('YES' if ok else 'NO')

#include <bits/stdc++.h>

using namespace std;

int main() {
#ifdef _DEBUG
	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
#endif
	
	int t;
	cin >> t;
	while (t--) {
		string s;
		cin >> s;
		vector<int> pos;
		pos.push_back(0);
		for (int i = 0; i < int(s.size()); ++i) {
			if (s[i] == 'R') pos.push_back(i + 1);
		}
		pos.push_back(s.size() + 1);
		int ans = 0;
		for (int i = 0; i < int(pos.size()) - 1; ++i) {
			ans = max(ans, pos[i + 1] - pos[i]);
		}
		cout << ans << endl;
	}
	
	return 0;
}

#include <bits/stdc++.h>

using namespace std;

int main() {
#ifdef _DEBUG
	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
#endif
	
	int n;
	cin >> n;
	vector<int> a(n), b(n);
	for (auto &it : a) cin >> it;
	for (auto &it : b) cin >> it;
	vector<int> c(n);
	for (int i = 0; i < n; ++i) {
		c[i] = a[i] - b[i];
	}
	sort(c.begin(), c.end());
	
	long long ans = 0;
	for (int i = 0; i < n; ++i) {
		if (c[i] <= 0) continue;
		int pos = lower_bound(c.begin(), c.end(), -c[i] + 1) - c.begin();
		ans += i - pos;
	}
	
	cout << ans << endl;
	
	return 0;
}

#include <bits/stdc++.h>

using namespace std;

bool in(int x, int l, int r) {
	return l <= x && x <= r;
}

int main() {
#ifdef _DEBUG
	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
#endif
	
	int n, h, l, r;
	cin >> n >> h >> l >> r;
	vector<int> a(n);
	for (auto &it : a) cin >> it;
	vector<vector<int>> dp(n + 1, vector<int>(n + 1, INT_MIN));
	dp[0][0] = 0;
	int sum = 0;
	for (int i = 0; i < n; ++i) {
		sum += a[i];
		for (int j = 0; j <= n; ++j) {
			dp[i + 1][j] = max(dp[i + 1][j], dp[i][j] + in((sum - j) % h, l, r));
			if (j < n) dp[i + 1][j + 1] = max(dp[i + 1][j + 1], dp[i][j] + in((sum - j - 1) % h, l, r));
		}
	}
	
	cout << *max_element(dp[n].begin(), dp[n].end()) << endl;
	
	return 0;
}

#include <bits/stdc++.h>

using namespace std;

vector<int> a;
vector<int> dp;
vector<int> ans;
vector<vector<int>> g;

void dfs(int v, int p = -1) {
	dp[v] = a[v];
	for (auto to : g[v]) {
		if (to == p) continue;
		dfs(to, v);
		dp[v] += max(dp[to], 0);
	}
}

void dfs2(int v, int p = -1) {
	ans[v] = dp[v];
	for (auto to : g[v]) {
		if (to == p) continue;
		dp[v] -= max(0, dp[to]);
		dp[to] += max(0, dp[v]);
		dfs2(to, v);
		dp[to] -= max(0, dp[v]);
		dp[v] += max(0, dp[to]);
	}
}

int main() {
#ifdef _DEBUG
	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
#endif
	
	int n;
	cin >> n;
	a = dp = ans = vector<int>(n);
	g = vector<vector<int>>(n);
	for (int i = 0; i < n; ++i) {
		cin >> a[i];
		if (a[i] == 0) a[i] = -1;
	}
	for (int i = 0; i < n - 1; ++i) {
		int x, y;
		cin >> x >> y;
		--x, --y;
		g[x].push_back(y);
		g[y].push_back(x);
	}
	
	dfs(0);
	dfs2(0);
	for (auto it : ans) cout << it << " ";
	cout << endl;
	
	return 0;
}