import math
a=int(input())
b=int(input())
n=int(input())
cnt=0
for i in range(0,n):
    c=int(input())
    if c%10==a or c%10==b:
        cnt+=1
print(cnt)

#include <iostream>

using namespace std;

int main()
{
    char a, b;
    int n;
    int ans = 0;
    cin >> a >> b >> n;
    string weihao;
    for(int i = 0; i < n; i++)
    {
        cin >> weihao;
        if(weihao[2] == a || weihao[2] == b)
        {
            ans++;
        }
    }
    cout << ans;
    return 0;
}