Submission #973767

#	Time	Username	Problem	Language	Result	Execution time	Memory
973767		Pannda	Permutation (APIO22_perm)	C++17	91.33 / 100	1 ms	440 KiB

perm

#include "perm.h"

#include <bits/stdc++.h>
using namespace std;

vector<int> construct_permutation(long long k) {
    int b = 63 - __builtin_clzll(k);
    k -= 1LL << b;
    int c = __builtin_popcountll(k);
    vector<int> key(b);
    iota(key.begin(), key.end(), c);
    for (int i = 0; i < c; i++) {
        int a = 63 - __builtin_clzll(k & -k);
        k -= 1LL << a;
        key.insert(key.begin() + b - a, i);
    }
    return key;
}

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