import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int x_sum  = 0;
        int x_val = 0;
        int y_sum = 0;
        int y_val  = 0;
        for(int a0 = 0; a0 < n; a0++){
            int x = in.nextInt();
            if(x<0)
                x = x*(-1);
            x_sum += x;
            if(x!=0)
                x_val = x;
            int y = in.nextInt();
            //if(y < 0)
                //y = y*(-1);
            y_sum += y;
            if(y!=0)
                y_val = y;
        }
         if( x_sum == 0 || y_sum == 0 || (x_sum/x_val == n) || (y_sum/y_val == n))
            System.out.println("YES");
        else
            System.out.println("NO");
    }
}