#include<bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n);
    for(auto &&v : a) cin >> v;
    int vl = a[0] + a.back();
    int l = 0, r = n - 1;
    while(l <= r){
        if(a[l] + a[r] != vl){
            cout << "No\n";
            return 0;
        }
        l++, r--;
    }
    cout << "Yes\n";
}