N = input()
one = 0
zero = 0
n = len(N)
for a in N:
    if a == "1":
        one += 1
    else:
        zero += 1
import sys
if one <= 1:
    print('No')
    exit()
if one == 2:
    print('Yes')
    exit()
left = n-1
right = 0
for i in range(n):
    if N[i] == "1":
        if i < left:
            left = i
        if i > right:
            right = i
if one == right - left + 1:
    print('Yes')
else:
    print('No')