N=int(input())
A=list(map(int,input().split()))
for i in range(len(A)):
  if A[-1]==0:
    del A[-1]
    N-=1
A=A[::-1]
C=0
for i in range(N):
  if (A[i]+C)%(N-i):
    print('No')
    exit()
  else:
    C+=(A[i]+C)//(N-i)
print('Yes')