#include <bits/stdc++.h>
using namespace std;
const int _ = 2e5 + 5;

struct NodeList
{
	int val;
	NodeList* pre;
	NodeList* nxt;
	NodeList(){pre = nxt = nullptr,val = 0;}
};

int n;
int cnt;
int sum;

int main()
{
	NodeList* List[_];
	NodeList* End[_];
//	End[0] = new NodeList;
	List[0] = new NodeList;
	return 0;
}

为什么注释掉21行程序能正常结束，而取消注释就会炸掉