#include    <iostream>
#include    <fstream>

using namespace std;

ifstream fin("bac.in");

int main()
{
    int n;
    fin >> n;

    char primCuv[21], crtCuv[21];
    fin >> primCuv;

    int nr = 0;
    for(int i = 1; i <= n - 1; i++)
    {
        fin >> crtCuv;
        char *p = strstr(crtCuv, primCuv);
        if(p != NULL)
        {
            if(strcmp(crtCuv, p) == 0)
                nr++;
        }
    }
    cout << nr;
    return 0;
}