import java.util.Scanner;
public class Main{
public static void main
(String[] args
){ Scanner sc
= new Scanner
(System.
in); int rn = sc.nextInt();
int rx=0;
int ry=0;
int rz=0;
for(int i=0;i<rn;i++){
rx+=sc.nextInt();
ry+=sc.nextInt();
rz+=sc.nextInt();
}
System.
out.
println((rx
==0 && ry
==0 && rz
==0)?"YES":"NO"); }
}
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