#include <bits/stdc++.h>
using namespace std;
int t;vector<int>a;vector<int>v;
#define ll long long
vector<vector<ll>>dop;

int main(){
    cin>>t;
    while(t--){
        ll sum=0;
        int n,b;
        cin>>n;
        
        for(int i=0;i<n;i++){
            int x;
            cin>>x;
            if(v.empty()&&a.empty()) v.push_back(x);
            else if(a.empty()&&v.back()<x) a.push_back(x);

//What if v.back()>=x and a is empty? You didnt seem to have checked that case.
            else if(a.back()>=x&&v.back()>=x){
                if(a.back()>v.back()) v.push_back(x);
                else a.push_back(x);
            }
            else if(v.back()>=x)v.push_back(x);
            else if(a.back()<x && v.back()<x){
                sum++;
                if(a.back()>v.back()) v.push_back(x);
                else a.push_back(x);
            }
            else a.push_back(x);
        }
        cout<<sum<<endl;
        // for(auto x:v) cout<<x<<" ";cout<<endl;
        a.clear();
        v.clear();
    }
}