Submission #730760

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
730760	2023-04-26 11:10:26	alextodoran	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	340 KiB

perm

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/**
 _  _   __  _ _ _  _  _ _
 |a  ||t  ||o    d | |o  |
| __    _| | _ | __|  _ |
| __ |/_  | __  /__\ / _\|
**/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector <int> construct_permutation (ll k) {
    int bits = 63 - __builtin_clzll(k);
    int len = bits + __builtin_popcountll(k) - 1;
    if (true) {
        vector <int> p;
        int l = 0, r = len - 1;
        for (int e = 0; e < bits; e++) {
            if ((k >> e) & 1) {
                p.push_back(r--);
            }
            p.push_back(l++);
        }
        return p;
    } else {
        vector <int> p = construct_permutation(k / 3);
        int len = (int) p.size();
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90