#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using a2 = array<ll, 2>;
using a3 = array<ll, 3>;

template <typename A>
void chmin(A &l, const A &r) {
    if (r < l)
        l = r;
}
template <typename A>
void chmax(A &l, const A &r) {
    if (l < r)
        l = r;
}

ll mod = 998244353;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    ll n;
    cin >> n;
    cout << (n ? "No" : "Yes") << endl;

    return 0;
}