/* -*- coding: utf-8 -*-
 *
 * 3387.cc:  No.3387 23578 Sequence - yukicoder
 */

#include<cstdio>
#include<algorithm>

using namespace std;

/* constant */

const int MAX_N = 100;

/* typedef */

/* global variables */

int as[MAX_N];

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 0; i < n; i++) scanf("%d", as + i);

  int s = as[0] + as[n - 1];
  bool ok = true;

  for (int i = 0, j = n - 1; ok && i <= j; i++, j--)
    ok = (as[i] + as[j] == s);

  if (ok) puts("Yes");
  else puts("No");
  
  return 0;
}