Submission #717970

#	Time	Username	Problem	Language	Result	Execution time	Memory
717970		125259	Permutation (APIO22_perm)	C++17	91.33 / 100	3 ms	432 KiB

perm

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

vector<long long>num;
void start(){
	long long cnt=1;
	for(int i=0; i<63; i++){
		num.push_back(cnt);
		cnt*=2;
	}
	return;
}

vector<int> construct_permutation(long long k){
	start();
	vector<int>v;
	for(int i=62; i>=0; i--){
		if(k>=num[i]){
			v.push_back(i);
			k-=num[i];
		}
	}
	sort(v.begin(),v.end());
	vector<int>vec;
	int cnt=v.back()+v.size()-2;
	int cnt1=0;
	for(int i=0; i<v.size()-1; i++){
		while(cnt1<v[i]){
			vec.push_back(cnt1);
			cnt1++;
		}
		vec.push_back(cnt); cnt--;
	}
	while(cnt1<v.back()){
		vec.push_back(cnt1); cnt1++;
	}
	
	return vec;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:28:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for(int i=0; i<v.size()-1; i++){
      |               ~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90