Submission #1199889

#TimeUsernameProblemLanguageResultExecution timeMemory
1199889ByeWorldPermutation (APIO22_perm)C++20
10 / 100
1 ms328 KiB
#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() > 84) assert(false);
    return a;
}
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