#include <bits/stdc++.h>
using namespace std;
//***********************************************//
#define int long long int
#define vi vector<int>
#define all(x) x.begin(), x.end()
#define read(v)                   \
      for (int i = 0; i < n; i++) \
      cin >> v[i]
#define read1(v)                   \
      for (int i = 1; i <= n; i++) \
      cin >> v[i]
#define yes cout << "YES\n"
#define no cout << "NO\n"
//**********************************************//

void solve(){
        int n;
        cin>>n;
        if(n==0)cout<<"Yes\n";
        else cout<<"No\n";  
}



signed main()
{

    
           solve(); 
      
}