#include <cstdio>
#include <algorithm>
using namespace std;
int main()
{
int T;
scanf("%d",&T);
for(int i=0; i<T; i++)
{
int A[20005]={};
int B[20005]={};
int N,M;
scanf("%d %d",&N,&M);
for(int j=0; j<N; j++)
{
scanf("%d",&A[j]);
}
for(int j=0; j<M; j++)
{
scanf("%d",&B[j]);
}
sort(B,B+M);
int ep=0;
for(int j=0; j<N; j++)
{
ep+=lower_bound(B,B+M,A[j])-B;
}
printf("%d\n",ep);
}
return 0;
}
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