#include <bits/stdc++.h>
using namespace std;
int main () {
    int sum = 0;
    int n = 0;
    string s;
    cin >> s;
    char p = '0';
    for (auto c : s) {
        sum += (c == '1');
        if (p == '0' && c == '1') {
            n ++;
        }
        p = c;
    }
    if (sum == 2) {
        cout << "Yes" << endl;
    } else if (sum == 1) {
        cout << "No" << endl;
    } else if (n == 1) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
}