import java.util.*;

class Main(){

    public static List<String> split(String str, String c){
        return Arrays.asList(str.split(c));
    }

    public static int dfs(String id, Map<String, List<String>> childMap, Map<String, Integer> directorySize){
        int res = directorySize.getOrDefault(id, 0);
        List<String> childs = childMap.getOrDefault(id, new ArrayList<>());
        for(String s : childs){
            res += dfs(s, childMap, directorySize);
        }

        return res;
    }

    public static void main(String[] argv){
        Scanner in = new Scanner(System.in);
        int m = in.nextInt();
        int n = in.nextInt();
        in.nextLine();

        Map<String, List<String>> childMap = new HashMap<>();
        Map<String, Integer> directorySize = new HashMap<>();

        for(int i = 0;i < m;i++){
            String[] param = in.nextLine().split(" ");
            String id = param[0];
            int size = Integer.parseInt(param[1]);
            directorySize.put(id, size);

            if(param[2].length(0) == 2) continue;

            String childstr = param[2].substring(1, param[2].length() - 1);
            List<String> childList = childstr.isEmpty() ? new ArrayList<>() : param[2].split(",");
            childMap.put(id, childList);
        }
        Sytem.out.println(dfs(String.value(n), childMap, directorySize));
    }
}