#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <queue>
#include <deque>
#include <stack>
#include <string>
#include <cmath>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main(){
    int x; cin >> x;
    
    if(x==0){
        cout << "Yes" << endl;
    }else{
        cout << "No" << endl;
    }

}