#include <iostream>
#include <string>

using namespace std;

int main()
{
	int n,m;
	cin>>n>>m;
	for(int i=0;i<n;i++)
	{
		int* arr= new int[m];
		for(int j=0;j<m;j++)
		{
			cin>>*(arr+j);
		}
		//for()
		int count=0;

		int p=0;
		for(int k=0;k<m;k++)
		{
			int num;
			cin>>num;
			while(num>*(arr+p) && p<=m)
			{
				p++;
			}
			if(num==*(arr+p))
			{
				count++;
			}
		}

		cout<<count<<endl;
		delete [] arr;
	}


    return 0;
}