#include<iostream>
using namespace std;
int main()
{
    int n,flag=1,a,b,x,y;
    cin >> n;
    for(int i=0;i<n;i++)
    {
        cin >> x >> y;
        if(i==0)
            {
            a=x;
            b=y;
            continue;
        }
        if(a!=0&&b!=0)
        {
        if(x%a==0&&y%b==0)
            {
                a=x;
                b=y;
                continue;
            }
        }
        if(x==a||y==b)
            {
                a=x;
                b=y;
                continue;
            }
        flag=0;
        break;        
    }
    if(flag)
        cout<<"YES";
    else
        cout<<"NO";
    return 0;
}