实在想不出来什么东西去de这个bug了

#include <cstdio>
const int MAXN = int(1e6) + 6;
struct node
{
	int left = 0;
	int right = 0;
}Node[MAXN];
int main()
{
	int n;
	int head = 1;
	scanf("%d", &n);
	for(int i = 2; i <= n; i++)
	{
		int k, p;
		scanf("%d %d", &k, &p);
		if(p)
		{
			Node[k].right = i;
			Node[i].left = k;
		}
		else
		{
			Node[k].left = i;
			Node[i].right = k;
		}
		
		if(k == head && !p)
			head = i;
	}
	int m;
	scanf("%d", &m);
	for(int i = 1; i <= m; i++)
	{
		int x;
		scanf("%d", &x);
		if(head == x)
		{
			head = Node[x].right;
		}
		Node[x].right = Node[Node[x].right].left;
		Node[x].left = Node[Node[x].left].right;
	}
	do
	{
		printf("%d ", head);
		head = Node[head].right;
	}while(Node[head].right);
	printf("\n");
	
	return 0;
}