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

if N <= 1:
    if A[1]%2 == 0:
        print("Yes")
    else:
        print("No")
    exit()

SUM = 1
for i in range(2, N+1):
    SUM += (i-1)*A[i]

print("Yes" if SUM <= A[1] else "No")