n = int(input())
l = list(map(int,input().split()))
ok1=n%2
a=l[1]
if ok1:
    for i in range(n-1):
        a+=l[i]
        if not a%2:
            ok1=0
    if ok1:
        print('Yes')
    else:
        print('No')
else:
    for i in range(n-1):
        a+=l[i]
        if a%2:
            ok1=1
    if ok1:
        print('No')
    else:
        print('Yes')