Submission #1312318

#	Time	Username	Problem	Language	Result	Execution time	Memory
1312318		lmaobruh	Permutation (APIO22_perm)	C++20	0 / 100	166 ms	327680 KiB

perm

#include <bits/stdc++.h>
#include "perm.h"
using namespace std;
#define ll long long
#define eb emplace_back
#define pb push_back
#define fi first
#define se second
#define ii pair<int,int>
#define ve vector
#define all(x) x.begin(), x.end()
#define fo(i,a,b) for (int i=(a); i<=(b); ++i)
#define fd(i,a,b) for (int i=(a); i>=(b); --i)
#define popcount(x) __builtin_popcountll(x)
#define maxi(a, b) a = max(a, b)
#define mini(a, b) a = min(a, b)
#define siz(x) ((int)(x).size())
#define vi ve<int>
#define _ << ' ' << 

const int N = 1e6+5, inf = 1e9+10, mod = 1e9+7;

vi shift(vi v, int off) {
    for (int &x : v) x += off;
    return v;
}

vi construct_permutation(ll k) {
    assert(k > 0);
    if (k == 1) return {};
    if (k == 2) return {0};
    for (int x : {2, 3, 5}) {
        if (k % x == 0) {
            vi tmp = construct_permutation(k / x);
            vi tmp1 = construct_permutation(x);
            tmp1 = shift(tmp1, siz(tmp));
            for (int x : tmp1) tmp.pb(x);
            return tmp;
        }
    }
    vi res = construct_permutation(k / 2);
    res.pb(siz(res));
    if (k % 2 == 0) {
        return res;
    }
    res.insert(res.begin(), siz(res));
    return res;
}

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