// Online C++ compiler to run C++ program online
#include <iostream>
#include <vector>
using namespace std;

int main() {
    int n;
    cin >> n;
    vector<int> v(n);
    for (auto &i : v) cin >> i;
        
    for (int i = 1; i <= n/2; i++) {
        if (v[i] + v[n-i-1] != v[0] + v[n-1]) {
            cout << "No\n";
            return 0;
        }
    }
    
    cout << "Yes\n";
    
    return 0;
}