N=input()

if N.count("1")<=1:
    print("No")
    exit()

if N.count("1")==2:
    print("Yes")
    exit()

flag=0
for i in range(len(N)):
    if flag==0 and N[i]=="1":
        flag=1
    if flag==1 and N[i]=="0":
        flag=2

    if flag==2 and N[i]=="1":
        print("NO")
        exit()

if flag==2:
    print("Yes")