#include <bits/stdc++.h>
#define lli long long int
using namespace std;
int main()
{
    lli n,i,t,sum,flag;
    cin >> t;
    while (t--)
    {
        flag = -1;
        cin >> n;
        vector<lli> arr(n);
        for(i=0;i<n;i++)
            cin >> arr[i];
        sort(arr.begin(),arr.end());
        for(i=1;i<n-1;i++)
        {
            sum = arr[i-1] + arr[i];
            if(arr[i+1] < sum)
            {
                flag = 1;
                break;
            }
        }
        if(flag == 1)
            cout << "Yes" << endl;
        else
            cout << "No" << endl;
    }
    return 0;
}
 

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