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

int main() {
    int n = 0;
    cin >> n;
    vector<int> a(n,0);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < n; i++) {
        if (a[n - i - 1] + a[i] != a[0] + a[n - 1]) {
            cout << "No" << endl;
            return 0;
        }
    }
    cout << "Yes" << endl;
}