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#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1000010;
int a[N];
signed main() {
int T;
cin >> T;
while (T--) {
int n, sum, mx;
cin >> n;
sum = 0, mx = 0;
for (int j = 0; j < n; j++) {
cin >> a[j];
sum += a[j];
mx = mx < a[j] ? a[j] : mx;
}
if ((sum - mx) >= (mx - 1))
puts("Yes");
else
puts("No");
}
}