#include<iostream>
#include<string.h>
using namespace std;
int main()
{int n,i,j,ok,aux=0;
char x[20], a[20];
cin>>n;
cin>>x; //primul cuvant
while(n>1)
{cin>>a;
ok=0;
j=strlen(x)-1;
for(i=strlen(a)-1; i>=0;i--)
{if(x[j]==a[i])
ok++;
j--;}
if(ok==strlen(x))
aux++;
n--;}
cout<<aux;}