Submission #684137

#	Time	Username	Problem	Language	Result	Execution time	Memory
684137		irmuun	Permutation (APIO22_perm)	C++17	100 / 100	3 ms	340 KiB

perm

#include<bits/stdc++.h>
#include "perm.h"
using namespace std;
#define ll long long
#define pb push_back
#define all(s) s.begin(),s.end()
vector<int> go(ll k){
	if(k==1){
		return {};
	}
	if(k==2){
		return {0};
	}
	for(auto i:{2,3,5,7,11,13,17,19,23,29}){
		if(k%i==0&&k>i){
			vector<int>l=go(k/i);
			vector<int>r=go(i);
			for(auto& x:r){
				x+=l.size();
			}
			l.insert(l.end(),all(r));
			return l;
		}
	}
	vector<int>a=go(k/2);
	a.pb(a.size());
	if(k%2==1){
		a.insert(a.begin(),a.size());
	}
	return a;
}
vector<int> construct_permutation(ll k){
	return go(k);
}

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