n = int(input())
a = list(map(int, input().split()))

se = a[0] + a[-1]

if n % 2 == 0:
    m = n // 2
else:
    m = n // 2 + 1

for i in range(m):
    #print(a[i], a[n-i-1])
    if a[i] + a[n-i-1] != se:
        print("No")
        break
else:
    print("Yes")