#include <bits/stdc++.h>
#define nmax 10005
using namespace std;
ifstream fin("matrix.in");
ofstream fout("matrix.out");
char a[nmax][nmax],b[nmax][nmax];
int sum[nmax][nmax],sum1[nmax][nmax],n,m;
void Citire()
{
    int i;
    fin>>n>>m;
    for(i=1;i<=n;i++)
        fin>>(a[i]+1);
    for(i=1;i<=m;i++)
        fin>>(b[i]+1);
}
void Rezolvare()
{
    int i,j,x,sol=0;
    long long s,sp,t,t1;
    s=sp=0;
    for(i=1;i<=m;i++)
    {
        for(j=1;j<=m;j++)
        {
            x=b[i][j]-'a'+1;
            s+=x;
            sp+=(x*x);
        }
    }
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
        {
            x=a[i][j]-'a'+1;
            sum[i][j]=x+sum[i-1][j]+sum[i][j-1]-sum[i-1][j-1];
            x=(x*x);
            sum1[i][j]=x+sum1[i-1][j]+sum1[i][j-1]-sum1[i-1][j-1];
        }
    }
    for(i=m;i<=n;i++)
        for(j=m;j<=n;j++)
    {
        t=sum[i][j]-sum[i-m][j]-sum[i][j-m]+sum[i-m][j-m];
        t1=sum1[i][j]-sum1[i-m][j]-sum1[i][j-m]+sum1[i-m][j-m];
        if(t==s && t1==sp)
            sol++;
    }
    fout<<sol<<"\n";
}
int main()
{
    Citire();
    Rezolvare();
    fin.close();
    fout.close();
    return 0;
}