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

int main(){
  int N, kkk;
  cin >> N;
  bool nnn = true;
  vector<int> a(N);
  for(int i =0; i < N; i++){
    cin >> a[i];
  }
  kkk = a[0] + a[N-1];
  for(int i = 0; i<= (N - 1)/2; i++){
    if(kkk != a[i] + a[N-i-1]){
      nnn = false;
    }
  }
  if(nnn){
    cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
  }
}