Submission #737657

#	Time	Username	Problem	Language	Result	Execution time	Memory
737657		tegid	Permutation (APIO22_perm)	C++17	0 / 100	0 ms	212 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
#define pb emplace_back

vector<int> construct_permutation(ll k){
	if(k<=4){
		if(k==2)return {1};
		if(k==3)return {2, 1};
		if(k==4)return {1, 2};
		return {}; // should not happen
	}else{
		if(k%2==0){
			vector<int> v=construct_permutation(k/2);
			vector<int> ans;
			ans.pb(1);
			for(int i=0;i<(int)v.size();i++)ans.pb(v[i]+1);
			return ans;
		}else{
			vector<int> v=construct_permutation(k-1);
			for(int i=0;i<(int)v.size();i++)v[i]++;
			v.pb(1);
			return v;
		}
	}
}

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