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#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define ROF(i, a, b) for (int i = (a); i >= (b); --i)
#define all(x) x.begin(),x.end()
#define CLR(i,a) memset(i,a,sizeof(i))
#define fi first
#define se second
#define pb push_back
#define SZ(a) ((int) a.size())
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll> pll;
typedef array<ll,3> arr;
typedef double DB;
typedef pair<DB,DB> pdd;
constexpr ll MAXN=static_cast<ll>(2e5)+10,INF=static_cast<ll>(5e18)+3;
ll N,M,T,A[MAXN],sumA[MAXN];
inline void solve(){
cin>>N>>M;
FOR(i,1,M){
cin>>A[i];
}
sort(A+1,A+1+M);
sumA[0]=0;
FOR(i,1,A[M]){
ll idx=M-(lower_bound(A+1,A+1+M,N-i)-A)+1;
if(i==N){
idx=0;
}
sumA[i]=sumA[i-1]+idx;
}
ll ans=0;
FOR(i,1,M){
ans+=sumA[A[i]];
if((A[i]-(N-A[i])+1)>0){
ans-=(A[i]-(N-A[i])+1);
}
if(A[i]>=N){
ans+=2;
}
}
cout<<ans<<"\n";
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
cin>>T;
while(T--){
solve();
#ifdef LOCAL
cerr << '\n';
#endif
}
return 0;
}
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