L = list(map(int, list(input())))

n = len(L)
cnt = 0
seq_flag = False
for i in range(n):
    if L[i] == 1:
        if i == 0:
            cnt += 1
        else:
            if L[i] == L[i - 1]:
                seq_flag = True
            else:
                cnt += 1
if (seq_flag and cnt == 1) or (not seq_flag and cnt == 2):
    print("Yes")
else:
    print("No")