#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> PII;
typedef long long LL;
typedef unsigned long long ULL;
template<class T> inline bool amax (T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool amin (T &a, const T &b) { if (a > b) { a = b; return 1; } return 0; }
template<class T> ostream& operator << (ostream &os, const vector<T> &v) { os << "["; for (typename vector<T>::const_iterator it = v.begin(); it != v.end(); it++) { os << (it != v.begin() ? ", " : "") << *it; } os << "]"; return os; }
template<class T> ostream& operator << (ostream &os, const set<T> &s) { os << "["; for (typename set<T>::const_iterator it = s.begin(); it != s.end(); it++) { os << (it != s.begin() ? ", " : "") << *it; } os << "]"; return os; }
template<class Key, class Val> ostream& operator << (ostream &os, const map<Key, Val> &m) { os << "{"; for (typename map<Key, Val>::const_iterator it = m.begin(); it != m.end(); it++) { os << (it != m.begin() ? ", " : "") << it->first << ":" << it->second; } os << "}"; return os; }
template<class T, class S> ostream& operator << (ostream &os, const pair<T, S> &p) { os << "(" << p.first << ", " << p.second << ")"; return os; }
template <class Target, class Source> inline Target lexical_cast (const Source &s) { Target t; stringstream ss; ss << s; ss >> t; return t; }

//> v < ^ (clock wise)
int dx[] = {1,0,-1,0};
int dy[] = {0,1,0,-1};
const int INFI = 1<<28;
const long long int INFL = 1LL<<60;
const double INFD = 1e+300;
const float INFF = 1e+100;
const double EPS = 1e-8;


int main(){
    cout.setf(ios::fixed); cout.precision(10);
    ios_base::sync_with_stdio(false);
    LL T;
    cin >> T;
    while (T--) {
        LL n;
        cin >> n;
        vector<LL> a(n);
        for (LL i = 0; i < n; i++) cin >> a[i];
        vector<vector<LL> > dp1(110, vector<LL>(110, INFI));
        dp1[0][0] = 0;
        for (LL i = 0; i < n; i++) {
            for (LL j = 0; j < i; j++) {
                for (LL k = 0; k < n; k++) {
                    if (dp1[j][k] != INFI &&  dp1[j][k] < a[i]-a[j]) {
                        cout << "dp1 " << i << " " << j << endl;
                        dp1[i][k+1] = min(dp1[i][k+1], a[i]-a[j]);
                    }
                }
            }
        }
        reverse(a.begin(), a.end());
        vector<vector<LL> > dp2(110, vector<LL>(110, INFI));
        dp2[0][0] = 0;
        for (LL i = 0; i < n; i++) {
            for (LL j = 0; j < i; j++) {
                for (LL k = 0; k < n; k++) {
                    if (dp2[j][k] != INFI &&  dp2[j][k] < a[i]-a[j]) {
                        cout << "dp2 " << i << " " << j << endl;
                        dp2[i][k+1] = min(dp2[i][k+1], a[i]-a[j]);
                    }
                }
            }
        }
        reverse(a.begin(), a.end());
        LL ans = 0;
        for (LL i = 0; i < n; i++) {
            LL tmp1 = 0;
            LL tmp2 = 0;
            for (LL j = n-1; j >= 0; j--)
                if (dp1[i][j] != INFI) {
                    tmp1 += j;
                    break;
                }
            for (LL j = n-1; j >= 0; j--) 
                if (dp2[n-i-1][j] != INFI) {
                    tmp2 += j;
                    break;
                }
            LL tmp = tmp1 + tmp2;
            if (ans < tmp) {
                cout << i << " " << a[i] << " " << tmp1 << " " << tmp2 << endl;
            }
            ans = max(ans, tmp);
        }
        cout << ans+1 << endl;
    }
    return 0;
}