import java.io.*;
import java.util.*;

class Solution
{
	public static void main(String args[])
	{
		Scanner sc = new Scanner(System.in);
		int []x = new int[50];
		int []y = new int[50];
		int flag = 1;
		int n;
		n = sc.nextInt();
		for (int i=0; i<n; i++){
			x[i] = sc.nextInt();
			y[i] = sc.nextInt();
		}

		for (int i=0; i<n; i++){
							if (Math.abs(x[i]) != Math.abs(y[i])){
								//System.out.println("NO");
								flag = -1;break;//System.exit(0);
							}
						}
						if (flag == 1){
							System.out.println("YES");
							System.exit(0);
		}

		flag = 1;
		for (int i=0; i<n-1; i++){
			if (Math.abs(x[i]) != Math.abs(x[i+1])){
				//System.out.println("NO");
				flag = -1;break;//System.exit(0);
			}
		}
		if (flag == 1){
			System.out.println("YES");
			System.exit(0);
		}

		flag = 1;

		for (int i=0; i<n-1; i++){
			if (flag == 1 && Math.abs(y[i]) != Math.abs(y[i+1])){
				//System.out.println("NO");
				flag = -1;break;//System.exit(0);
			}
		}
		if (flag == 1){
			System.out.println("YES");
			System.exit(0);
		}

		flag = 1;
		double slp = (double)(y[1]-y[0])/(x[1]-x[0]);
		double slpn = (-1)*slp;
		for (int i=0; i<n-1; i++){
			if (flag == 1){
				double d1 = x[i+1]-x[i];
				double d2 = y[i+1]-y[i];
				if (Math.abs(d2/d1) != Math.abs(slp) || Math.abs(d2/d1) != Math.abs(slpn)){
					flag = -1;//System.out.println("NO");
					break;
				}
			}
		}

		if (flag == 1){
			System.out.println("YES");
		} else if (flag == -1) {
			System.out.println("NO");
		}
	}
}