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#include <bits/stdc++.h>

using namespace std;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n; cin>>n;
    bool tab[1000001]={0};
    int sum=0,cnt=0,lim,num;
    while(sum<n){
        cnt++;
        sum+=__builtin_popcount(cnt);
    }
    num = lim = cnt;
    while(sum>n){
        int popcnt = __builtin_popcount(cnt);
        if(sum-popcnt >= n){
            sum-=popcnt;
            tab[cnt]=true;
            num--;
        }
        cnt--;
    }

    cout<<num<<'\n';
    for(int i=lim; i; --i){
        if(!tab[i]) cout<<i<<' ';
    }
    cout<<'\n';



    return 0;
}