N = int(input())
A = list(map(int, input().split()))

E = sum(i * A[i] for i in range(N+1))
V = sum(a for a in A)

#E = 2(V-1) としたい。
#E += i, V += 1の操作が i = N+1, N+2, ... について行える

print("Yes" if E <= 2*(V-1) else "No")