#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#include <atcoder/dsu>
#include <atcoder/segtree>
using namespace atcoder;
using namespace std;
typedef long long ll;
#define rep(i,a,b) for(int i=a;i<b;i++)
using vi = vector<int>; 
using vvi = vector<vi>; 
using li =vector<ll>;
using lli=vector<li>;
using si =vector<char>;
using ssi =vector<si>;
const long long INF = 1e18;
const long long MOD=1e9+7;
//for (auto [key, val] : mp)
int main() { string s;cin>>s;
int n=s.size();
int a=0;
rep(i,0,n){
	if(s[i]=='1')a++;
}
if(a==2){cout<<"Yes";return 0;}
else if(a<2){cout<<"No";return 0;}
else{int cnt=0;
rep(i,0,n){
	if(s[i]=='1')cnt++;
	if(s[i]=='0'&&cnt&&cnt!=a){cout<<"No";return 0;}
}
	cout<<"Yes";
}
}