#include<stdio.h>
int main()
{
	char s[100005];
	scanf("%s", s);
	int i, n, j, k;
	for (n = 0; s[n] != '\0'; n++);
	int cnt = 0;
	for (i = 0; i < n; i++)
		if (s[i] == '1')
			cnt++;
	if (cnt < 2)
	{
		printf("No\n");
		return 0;
	}
	if (cnt == 2)
	{
		printf("Yes\n");
		return 0;
	}
	for (i = 0; s[i] == '0'; i++);
	for (j = n - 1; s[j] == '0'; j--);
	cnt = 0;
	for (k = i; k <= j; k++)
		if (s[k] == '0')
			cnt++;
	if (cnt > 0)
		printf("No\n");
	else
		printf("Yes\n");
	return 0;
}