import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Main {
    // 匹配方案个数
    public static int count = 0;
    public static void kSum(List<Integer> numbers, int target) {
        //实现逻辑
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String source = sc.nextLine();
        String[] str = source.split(",");
        List<Integer> in = new ArrayList<Integer>();
        for (int i = 0; i < str.length; i++)
            in.add(Integer.parseInt(str[i]));
        int target = Integer.parseInt(sc.nextLine());
        kSum(in, target);
        System.out.println(count);
    }
}