#include <stdio.h>
#include<malloc.h>

typedef struct Node {
    int num;
    struct Node *next;
} LinkNode;

void construct(LinkNode* &head) {
    head = (LinkNode*)malloc(sizeof(LinkNode));
    head->next = NULL;
    LinkNode* p = head;
    for (int i = 0; i < 10; i++) {
        LinkNode* node = (LinkNode*)malloc(sizeof(LinkNode));
        scanf("%d", &node->num);
        node->next = NULL;
        p->next = node;
        p = node;
    }
}
void print(LinkNode* head) {
    LinkNode* p = head->next;
    while (p != NULL) {
        printf("%d ", p->num);
        p = p->next;
    }
    printf("\n");
}
void delRepeat(LinkNode* head) {
    LinkNode* p = head->next;
    while (p != NULL && p->next != NULL) {
        while (p->next != NULL && p->num == p->next->num) {
            p->next = p->next->next;
        }
        p = p->next;
    }
}

int main() {
    LinkNode* L;
    construct(L);
    print(L);
    delRepeat(L);
    print(L);
    return 0;
}