#include<bits/stdc++.h>
using namespace std;
void solve(){
int n;
cin>>n;
vector<int> v;
int ans=0;
int max=0;
int temp;
cin>>temp;
v.push_back(temp);
max=temp;
for(int i=1;i<n;i++){
cin>>temp;
v.push_back(temp);
if(temp<max)ans++;
else max=temp;
}
cout<<ans<<endl;
}
int main(){
int t;
cin>>t;
while(t--){
solve();
}
return 0;
}
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