#include <bits/stdc++.h>

#define fastio                        \
    ios_base::sync_with_stdio(false); \
    cin.tie(NULL)

#define endl "\n"

using namespace std;

int main()
{
    fastio;
    int x; cin >> x;
    (x == 0) ? cout << "Yes" << endl : cout << "No" << endl;
    return 0;
}