#include <bits/stdc++.h>
#define nrmax 1007
using namespace std;
ifstream fin ("matrix.in");
ofstream fout ("matrix.out");

char a[nrmax][nrmax], b[nrmax][nrmax];
long long sum[nrmax][nrmax], sum1[nrmax][nrmax], 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()
{
    long long s=0, spatrat=0, x, t, t1;
    int i, j, sol=0;
    for (i=1; i<=m; i++)
        for (j=1; j<=m; j++)
        {
            x=b[i][j]-'a'+1;
            s+=x;
            spatrat+=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==spatrat)
                sol++;
        }
    fout << sol << "\n";
}

int main()
{
    Citire();
    Rezolvare();
    fin.close();
    fout.close();
    return 0;
}