#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
#include<math.h>
#include<set>
#define all(x) x.begin(),x.end()
#define gall(x) x.begin(),x.end(),greater<>()
#define pb push_back
#define ll long long 
#define P pair<double,double>
#define LP pair<ll,ll>
using namespace std;


int main() {
	string s;
	cin >> s;
	int x=0 ;
	for (int i =0; i < s.size(); i++) {
		if (s[i] == '1') x += pow(2, s.size() - i - 1);
	}
	bool f = 1;
	for (int j = 0; j < s.size(); j++) {
		    int y = x;
			y  -= pow(2, j);
			if(y==0) {
				f = 0;
				continue;
		}

	}
	if (f) cout << "Yes" << endl;
	else cout << "No" << endl;
	return 0;
}