#include <iostream>

using namespace std;

int a[200];

bool check(int a, int b, int c) {
  if (a + b <= c)
    return false;
  if (a + c <= b)
    return false;
  if (b + c <= a)
    return false;
  return true;
}

void run() {
  int n;
  cin >> n;
  for (int i = 0; i < n; i++)
    cin >> a[i];

  if (n == 2) {
    if (check(a[0], a[0], a[1]) || check(a[0], a[1], a[1])) {
      cout << "YES\n";
    } else {
      cout << "NO\n";
    }
    return;
  }

  for (int i = 0; i < n - 2; i++) {
    if (check(a[i], a[i + 1], a[i + 2])) {
      cout << "YES\n";
      return;
    }
  }

  for (int i = 0; i < n - 1; i++) {
    if (check(a[i], a[i], a[i + 1]) || check(a[i], a[i + 1], a[i + 1])) {
      cout << "YES\n";
      return;
    }
  }

  cout << "NO\n";
}

int main() {
  int t;
  cin >> t;
  while (t--) {
    run();
  };
}