#include<iostream>
#include <bits/stdc++.h>
using namespace std;

void solve(){
    int n =0;
    cin >> n;
    vector<int> arr(n);
    for(int i =0; i < n; i++){
        cin >> arr[i];
    }
    int ans =0;
    int l =0, r = n-1;

    int sum = arr[l] + arr[r];
    l++;
    r--;
    while(l <= r){
        if(sum  ==  (arr[l] + arr[r])){
            continue;
        }
        else{
             cout << "No" << endl;
            return;
        }
    }
    cout << "Yes" << endl;
}

int main (){
    int t =1;
    // cin >> t;
    while(t--){
        solve();
    }
    return 0;
}