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

struct Elem {
    struct Elem *next;
    char *word;
};

struct Elem *InitSingleLinkedList()
{
    struct Elem *list = (struct Elem*)malloc(sizeof(struct Elem));
    list->next = NULL;
    list->word = "xex";
    return list;
}

struct Elem *bsort(struct Elem *list)
{

    return list;
}

int main()
{
    char *cur = (char*)malloc(100000 * sizeof(char));
    struct Elem *l = InitSingleLinkedList();
    struct Elem *c = l;
    struct Elem *f;
    int n = 0, len, i;
    while (1) {
        scanf("%s", cur);
        len = (int)strlen(cur);
        if (len != 0) {
            struct Elem *now = (struct Elem*)malloc(sizeof(struct Elem));
            now->word = cur;
            c->next = now;
            c = now;
            n++;
        }
        else break;
    }
    c = l->next;
    for (i = 0; i < n; i++) {
        printf("%s ", c->word);
        c = c->next;
    }
    c = l->next;
    for (i = 0; i < n; i++) {
        f = c->next;
        free(c);
        c = f;
    }
    free(cur);
    free(l);
    return 0;
}