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

int countBits(int n){
    int wynik = 0;
    while(n){
        wynik += n%2;
        n /= 2;
    }
    return wynik;
}
int32_t main(){
    ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
    int x;
    cin>>x;
    int sum = 0, i = 0;
    while(sum < x){
        i++;
        //cout<<i<<" "<<countBits(i)<<"\n";
        sum += countBits(i);
    }
    bool czy = 0;
    if(sum == x){
        cout<<i<<"\n";
    }
    else{
        cout<<i - 1<<"\n";
    }
    for(int i2 = i; i2 > 0; i2--){
        if((sum - countBits(i2)) != x || czy == 1){
            cout<<i2<<" ";
        }
        else{
            czy = 1;
        }
    }
}