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

#define rep(i, a, b) for (int i = a; i < b; i++)
using ll = long long;

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