#include <bits/stdc++.h>
using namespace std;
#define ll long long

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    string N;
    cin >> N;
    int n = N.size();

    bool ans = false;
    int count = 0;
    for (int i=0;i<n;i++) {
        if (N[i] == '1') {
            count++;
        }
    }
    if (count == 2) ans = true;

    bool f0 = false;
    bool f1 = true;
    for (int i=0;i<n;i++) {
        if (N[i] == '0') {
            f0 = true;
        } else {
            if (f0) {
                f1 = false;
            }
        }
    }
    if (f1) ans = true;

    if (count == 1) ans = false;

    if (ans) {
        cout << "Yes" << "\n";
    } else {
        cout << "No" << "\n";
    }
    return 0;
}