n=int(input())
*a,=map(int,input().split())
a=[0]+a
for i in range(n+1):
    if i<a[i]:
        print('No')
        exit()

from itertools import accumulate
acc=list(accumulate(a))
modacc=[]
for i in range(1,n+1):
    modacc.append((acc[-1]-acc[i-1])%i)

if sum(modacc)==0:
    print('Yes')
else:
    print('No')