Submission #982744

#	Time	Username	Problem	Language	Result	Execution time	Memory
982744		vjudge1	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	512 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector <ll>;
using vi = vector <int>;

vi construct_permutation (ll k) {
    vector <double> dans;
    ll bits = 0;
    {ll kk = k/2;
    while (kk) {
        dans.push_back(bits);
        bits++;
        kk /= 2;
    }}
    ll i = bits;
    assert(k>>i&1);
    for (i--; i >= 0; i--) {
        if (k>>i&1) {
            dans.push_back(-0.5+i);
        }
    }
    vector <double> key(dans);
    sort(key.begin(), key.end());
    vi ans;
    for (double i : dans) {
        ans.push_back(lower_bound(key.begin(), key.end(), i)-key.begin());
    }
    return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90