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#include <bits/stdc++.h>
using namespace std;
int func(int x){
int y = x;
int z = 0;
while(y > 0){
    if(y % 2 == 1){
       z++;
    }
    y /= 2;
}
return z;
}
int wart[25];
int tab[25];
int ver[200000];
int main(){
cin.tie(0);
cout.tie(0);
ios_base::sync_with_stdio(0);
int a;
cin>>a;
vector<pair<int,int>> V;
for(int i = 0; i < 200000;i++){
    V.push_back({i,func(i)});
}
vector<pair<int,int>> ans;
int z = 0;
int k = 0;
while(z < a){
    if(V[k].second + z <= a){
        z+= V[k].second;
        ans.push_back({V[k].first,V[k].second});
        wart[V[k].second]++;
        k++;
    }else{
        int y = V[k].second + z;
        y-= a;
        if(wart[y] > 0){
            wart[y]--;
            wart[V[k].second]++;
            tab[y]++;
        z+= V[k].second - y;
        ans.push_back({V[k].first,V[k].second});
        }
        k++;
    }
}
int p = ans.size() - 1;
for(int i = ans.size() - 1; i >= 0;i--){
    if(tab[ans[i].second] > 0){
        tab[ans[i].second]--;
        ver[i] = 1;
        p--;
    }
}
ver[0] = 1;
cout<<p <<"\n";
for(int i = ans.size() - 1; i >= 0;i--){
    if(ver[i] == 0){
        cout<<ans[i].first <<" ";
    }
}
}