#include <iostream>
#include <string>

using namespace std;

int main(){
	string s;
	cin>>s;
	int loccount = 0;

	for(int i=0; i<(int)s.size(); i+=8){
		if(s[i] == '1'){//lokomotiva
			if(loccount != 0){
				cout<<"No";
				return 0;
			}
			for(int x=i+7; x>i; x--){
				if(s[x] == '0'){
					loccount++;
				}
				else break;
			}
		}
		else{//vagon
			loccount--;
		}
	}
	if(loccount != 0){
		cout<<"No";
		return 0;
	}
	else cout<<"Yes";
	return 0;
}