n = input()
c = n.count("1")
if c == 1:
    print("No")
elif c == 2:
    print("Yes")
else:
    num = 0
    for a,na in zip(n,n[1:]):
        if a != na:
            num += 1
    if num <= 1:
        print("Yes")
    else:
        print("No")