#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int a[n];
    for(int i=1;i<=n;i++) cin>>a[i];
    for(int i=1;i<=n;i++){
        int b = a[i] + a[n-i+1];
        if (b!= (a[1]+a[n])){
            cout<<"No\n";
            return 0;
        }
    }
    cout<<"Yes\n";
}