#include <bits/stdc++.h>
using namespace std;
const int N = 1e6+7;
int sum[N];
void solve(){
int n;
cin>>n;
vector<int> ans;
while(n){
int l = 1,r = n;
while(l!=r){
int mid = (l+r)/2;
if (sum[mid]<n){
l = mid + 1;
}
else{
r = mid;
}
}
ans.push_back(l);
n -= sum[l] - sum[l-1];
}
cout<<ans.size()<<endl;
for(int to:ans){
cout<<to<<' ';
}
cout<<endl;
}
signed main(){
for(int i = 1;i<N;i+=1){
sum[i] = sum[i-1] + __builtin_popcount(i);
}
int tt = 1;
while(tt--){
solve();
}
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | #include <bits/stdc++.h> using namespace std; const int N = 1e6+7; int sum[N]; void solve(){ int n; cin>>n; vector<int> ans; while(n){ int l = 1,r = n; while(l!=r){ int mid = (l+r)/2; if (sum[mid]<n){ l = mid + 1; } else{ r = mid; } } ans.push_back(l); n -= sum[l] - sum[l-1]; } cout<<ans.size()<<endl; for(int to:ans){ cout<<to<<' '; } cout<<endl; } signed main(){ for(int i = 1;i<N;i+=1){ sum[i] = sum[i-1] + __builtin_popcount(i); } int tt = 1; while(tt--){ solve(); } } |
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