#include <bits/stdc++.h>
using namespace std;

template<typename T>
vector<T> zaatu(vector<T> &A){
    //座標圧縮=Compress.
    vector<T> B = A;
    sort(B.begin(),B.end());
    B.erase(unique(B.begin(),B.end()),B.end());
    for(auto &a : A) a = lower_bound(B.begin(),B.end(),a)-B.begin();
    return B;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int T; cin >> T;
    int sn = 0;
    while(T--){
        int N; cin >> N;
        sn += N;
        if(sn > 7000 && N > 5) return 0;

        vector<int> H(N);
        for(auto &h : H) cin >> h;
        zaatu(H);

        vector<vector<int>> dp(4,vector<int>(N,1001001001));
        for(int i=0; i<N; i++){
            if(H.at(0) > H.at(1)){
                if(i < H.at(1)) dp.at(0).at(i) = 1;
                else if(i == H.at(1)) dp.at(0).at(i) = 0;
                else if(i <= H.at(0)) dp.at(0).at(i) = 1;
                else dp.at(0).at(i) = 2; 
            }
            else{
                if(i <= H.at(0)) dp.at(0).at(i) = 1;
                else if(i == H.at(1)) dp.at(0).at(i) = 1;
                else dp.at(0).at(i) = 2; 
            }
        }

        auto chmin = [&](auto &a,auto b) -> void {a=min(a,b);};
        for(int p=2; p<N; p++){
            int h = H.at(p);
            vector<vector<int>> next(4,vector<int>(N,1001001001));
            for(int t=0; t<4; t++){
                if(t%2 == 0){
                    int low = 1001001001;
                    for(int i=N-1; i>=0; i--){
                        low = min(low,dp.at(t).at(i));
                        chmin(next.at(t).at(i),low+1);
                    }
                    low = 1001001001;
                    for(int i=0; i<N; i++){
                        low = min(low,dp.at(t).at(i));
                        chmin(next.at(t+1).at(i),low+1);
                    }
                    for(int i=h; i<N; i++) chmin(next.at(t).at(h),dp.at(t).at(i));
                    for(int i=0; i<=h; i++) chmin(next.at(t+1).at(h),dp.at(t).at(i));
                }
                else{
                    int low = 1001001001;
                    for(int i=0; i<N; i++){
                        low = min(low,dp.at(t).at(i));
                        chmin(next.at(t).at(i),low+1);
                    }
                    low = 1001001001;
                    if(t != 3) for(int i=N-1; i>=0; i--){
                        low = min(low,dp.at(t).at(i));
                        chmin(next.at(t+1).at(i),low+1);
                    }
                    if(t != 3) for(int i=h; i<N; i++) chmin(next.at(t+1).at(h),dp.at(t).at(i));
                    for(int i=0; i<=h; i++) chmin(next.at(t).at(h),dp.at(t).at(i));
                }
            }            
            swap(dp,next);
        }
        cout << *min_element(dp.at(3).begin(),dp.at(3).end()) << "\n";
    }
}