Submission #1199891

#	Time	Username	Problem	Language	Result	Execution time	Memory
1199891		ByeWorld	Permutation (APIO22_perm)	C++20	10 / 100	1 ms	328 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> construct_permutation(long long k) {
    if (k == 1) return {};
    if (k == 2) return {0};
    for (int i : {2, 3, 5, 7}) {
        if (k%i == 0 && k > i) {
            vector<int> l = construct_permutation(k/i),
                        r = construct_permutation(i);
            for (int &i : r) i += int(l.size());
            for (int i : r) l.emplace_back(i);
            return l;
        }
    }
    vector<int> a = construct_permutation(k/2);
    a.emplace_back(int(a.size()));
    if (k & 1LL) a.insert(a.begin(), int(a.size()));

    if(a.size() >= 90) assert(false);
    return a;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 90