다음 C 프로그램의 실행 결과를 쓰시오.

#include <stdio.h>

struct Node {
    int value;
    struct Node *next;
};

int main(void) {
    struct Node a = {1, NULL};
    struct Node b = {2, NULL};
    struct Node c = {3, NULL};

    a.next = &b;
    b.next = &c;
    c.next = NULL;

    c.next = &a;
    a.next = &b;
    b.next = NULL;

    struct Node *head = &c;
    printf("%d %d %d", head->value,
           head->next->value,
           head->next->next->value);
    return 0;
}