https://codeforces.com/group/n3sTiYtHxI/contest/348734/problem/C

#include <iostream>
#include<bits/stdc++.h>
#define ll long long
using namespace std;


bool odd(int n ){
    return n%2 ;
}

string binary(int n ){
    string bin ;
    while (n>0){
        bin.push_back(n%2 ==0 ?'0':'1');
        n/=2;
    }
    reverse(bin.begin(),bin.end());
    return bin;
}

bool palindrome (string s){
    int l=0 , r=s.size()-1;
    while (l<r){
        if (s[l++]!= s[r--])
        return false;

        return true ;
    }
}

int main() {
   ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);


 int n ; cin>>n;

 if(odd(n) && palindrome(binary(n)))  cout<<"YES\n";
 else   cout <<"NO\n";

    return 0;
}