pata1097

第三个测试点提示段错误，求大佬给改进

#include<iostream>
#include<vector>
#include<cstdio>
#include<cmath>
using namespace std;
const int maxn=100010;
struct node{
	int add,data,next;
	bool flag;
}_node[maxn];
int main()
{
	#ifdef ONLINE_JUDGE
	#else
	freopen("in.txt","r",stdin);
	freopen("out.txt","w",stdout);
	#endif
	for(int i=0;i<maxn;i++){
		_node[i].flag=false;
	}
	int begin,n;
	cin>>begin>>n;
	for(int i=0;i<n;i++){
		int _add,_data,_next;
		cin>>_add>>_data>>_next;
		_node[_add].add=_add;
		_node[_add].data=_data;
		_node[_add].next=_next;
	}
	int p=begin;
	int count=0;
	int temp[maxn]={};
	while(p!=-1){
		if(temp[(int)fabs(_node[p].data)]<1){
			_node[p].flag=true;
			temp[(int)fabs(_node[p].data)]++;
		}
		p=_node[p].next;
	}
	vector<node> vn,vnn;
	int pp=begin;
	while(pp!=-1){
		if(_node[pp].flag){
			vn.push_back(_node[pp]);
		}else{
			vnn.push_back(_node[pp]);
		}
		pp=_node[pp].next;
	}
	for(int i=0;i<vn.size()-1;i++){
		vn[i].next=vn[i+1].add;
		printf("%05d %d %05d\n",vn[i].add,vn[i].data,vn[i].next);
	}
	vn[vn.size()-1].next=-1;
	printf("%05d %d -1\n",vn[vn.size()-1].add,vn[vn.size()-1].data);
	for(int i=0;i<vnn.size()-1;i++){
		vnn[i].next=vnn[i+1].add;
		printf("%05d %d %05d\n",vnn[i].add,vnn[i].data,vnn[i].next);
	}
	vnn[vnn.size()-1].next=-1;
	printf("%05d %d -1\n",vnn[vnn.size()-1].add,vnn[vnn.size()-1].data);
	return 0;
}