제출 #638486

#제출 시각아이디문제언어결과실행 시간메모리
638486TranGiaHuy1508순열 (APIO22_perm)C++17
98 / 100
2 ms340 KiB
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

namespace {
	vector<int> primes = {2, 3, 5};

	deque<int> q;
	int lim;

	void mult(int x){
		for (int i = lim + x - 2; i >= lim; i--){
			q.push_back(i);
		}
		lim += x - 1;
	}

	void add1(){
		q.push_front(lim++);
	}

	void solve(ll k){
		if (k == 1) return;
		for (int i = 0; i < (int)primes.size(); i++){
			if (k % primes[i] == 0){
				solve(k / primes[i]);
				mult(primes[i]);
				return;
			}
		}
		solve(k - 1);
		add1();
		return;
	}
}

vector<int> construct_permutation(ll k){
	lim = 0;
	solve(k);
	vector<int> v;
	while (!q.empty()){
		v.push_back(q.front());
		q.pop_front();
	}
	return v;
}
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