#include<iostream>
#include<vector>
using namespace std;
int main()
{

        int n;
        cin>>n;
        int arr[n];
        for(int i = 0 ; i<n ; i++)
        {
            cin>>arr[i];
        }
        bool flag = true;
        int sum= arr[0] + arr[n-1];
        for(int i = 0, j=n-1 ; i<n/2 ; i++,j--)
        {
            if(sum != arr[i]+ arr[j])
            {
                 flag = false;
                break;
            }
        }


        if(flag)
        cout<<"Yes"<<endl;
        else 
        cout<<"No"<<endl;
        
    
    return 0;
}