#include <stdio.h>
#include <stdlib.h>

struct list
{
    struct list *next;
    int key;
};

struct list *delete(struct list *l, int key)
{
    if (l == NULL)
        return NULL;
    while (l != NULL && l->key == key)
    {
        struct list *tmp = l->next;
        free(l);
        l = tmp;
    }
    if (l == NULL)
        return NULL;
    struct list *extra = l;
    while (l->next != NULL)
    {
        if (l->next->key == key)
        {
            struct list *tmp = l->next->next;
            free(l->next);
            l->next = tmp;
        }
        l = l->next;
    }
    return extra;
}

int main(void)
{
    FILE* in = fopen("input.txt", "r");
    FILE* out = fopen("output.txt", "w");

    int x = 0;
    struct list *h1 = malloc(sizeof(*h1));
    struct list *c1 = h1;
    for (fscanf(in, "%d", &x); x != -1; fscanf(in, "%d", &x))
    {
        h1->key = x;
        h1->next = malloc(sizeof(*h1));
        h1 = h1->next;
    }

    h1->next = NULL;
    h1->key = -1;

    for (fscanf(in, "%d", &x); x != -1 && c1 != NULL; fscanf(in, "%d", &x))
        c1 = delete(c1, x);
    struct list *tmp;

    for (tmp = c1; tmp != NULL && tmp->key != -1; tmp = tmp->next)
        fprintf(out, "%d ", tmp->key);

    fclose(in);
    fclose(out);
    return 0;
}