S = input()
N = len(S)
if S.count("1") == 1:
    print("No")
    exit()
if S.count("1") == 2:
    print("Yes")
    exit()

st = 0
for i in range(N):
    if st == 0:
        if S[i] == "1":
            continue
        else:
            st = 1
    else:
        if S[i] == "0":
            continue
        else:
            print("No")
            exit()
print("Yes")