#include <bits/stdc++.h>
using namespace std;
int main() 
{
int N;
cin >> N;
vector<int> A(N);
for (int i = 0; i < N; i++) 
{
  cin >> A[i];
}
int S = A[0] + A[N - 1];
for (int i = 0; i < N; i++) 
{
  if (A[i] + A[N - i - 1] != S) 	
  {
   cout << "No"<<endl;
   return 0;
  }
}
cout << "Yes"<<endl;
return 0;
}