#include<bits/stdc++.h>
using namespace std;

const int maxN = 5010;

long long x[maxN],y[maxN];

bool check(int a,int b,int c)
{
	long long p1 = x[b]-x[c];
	long long p2 = y[b]-y[c];
	
	long long q1 = x[b]-x[a];
	long long q2 = y[b]-y[a];
	
	return (p1*q1 + p2*q2) > 0;
}

int main()
{
	int n;
	cin>>n;
	
	for(int i=0;i<n;i++)
	{
		cin>>x[i]>>y[i];
	}
	
	int p[n];
	p[0] = 0;
	p[1] = 1;
	
	for(int i=2;i<n;i++)
	{
		p[i] = i;
		
		int j = i;
		
		while(j>1 && !check(p[j-2], p[j-1],p[j]))
		{
			swap(p[j-1],p[j]);
			j--;
		}
	}
	
	for(int i=0;i<n;i++)
		cout<<p[i]+1<<' ';
	cout<<endl;

	return 0;
}
### Prompt

Your challenge is to write a cpp solution to the following problem:

Nezzar loves the game osu!.

osu! is played on beatmaps, which can be seen as an array consisting of distinct points on a plane. A beatmap is called nice if for any three consecutive points A,B,C listed in order, the angle between these three points, centered at B, is strictly less than 90 degrees.

<image> Points A,B,C on the left have angle less than 90 degrees, so they can be three consecutive points of a nice beatmap; Points A',B',C' on the right have angle greater or equal to 90 degrees, so they cannot be three consecutive points of a nice beatmap.

Now Nezzar has a beatmap of n distinct points A_1,A_2,…,A_n. Nezzar would like to reorder these n points so that the resulting beatmap is nice.

Formally, you are required to find a permutation p_1,p_2,…,p_n of integers from 1 to n, such that beatmap A_{p_1},A_{p_2},…,A_{p_n} is nice. If it is impossible, you should determine it.

Input

The first line contains a single integer n (3 ≤ n ≤ 5000).

Then n lines follow, i-th of them contains two integers x_i, y_i (-10^9 ≤ x_i, y_i ≤ 10^9) — coordinates of point A_i.

It is guaranteed that all points are distinct.

Output

If there is no solution, print -1.

Otherwise, print n integers, representing a valid permutation p.

If there are multiple possible answers, you can print any.

Example

Input


5
0 0
5 0
4 2
2 1
3 0


Output


1 2 5 3 4

Note

Here is the illustration for the first test:

<image>

Please note that the angle between A_1, A_2 and A_5, centered at A_2, is treated as 0 degrees. However, angle between A_1, A_5 and A_2, centered at A_5, is treated as 180 degrees.

### Response

```cpp
#include<bits/stdc++.h>
using namespace std;

const int maxN = 5010;

long long x[maxN],y[maxN];

bool check(int a,int b,int c)
{
	long long p1 = x[b]-x[c];
	long long p2 = y[b]-y[c];
	
	long long q1 = x[b]-x[a];
	long long q2 = y[b]-y[a];
	
	return (p1*q1 + p2*q2) > 0;
}

int main()
{
	int n;
	cin>>n;
	
	for(int i=0;i<n;i++)
	{
		cin>>x[i]>>y[i];
	}
	
	int p[n];
	p[0] = 0;
	p[1] = 1;
	
	for(int i=2;i<n;i++)
	{
		p[i] = i;
		
		int j = i;
		
		while(j>1 && !check(p[j-2], p[j-1],p[j]))
		{
			swap(p[j-1],p[j]);
			j--;
		}
	}
	
	for(int i=0;i<n;i++)
		cout<<p[i]+1<<' ';
	cout<<endl;

	return 0;
}
```