Submission #594650

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
594650	2022-07-12 19:05:53	mohammad_kilani	Permutation (APIO22_perm)	C++17	100 / 100	2 ms	340 KiB

perm

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#include "perm.h"
#include <bits/stdc++.h>
using namespace std;
std::vector<int> construct_permutation(long long k){
  vector< int > ret;
  int mx = 0;
  while((1LL << (mx + 1)) <= k)
    mx++;
  int a = 0;
  for(int i = 0 ;i <= mx;i++){
    if(((k >> i) & 1) == 1)
      a++;
  }
  
  if(a <= 30){
    for(int i = 0 ;i < mx;i++)
      ret.push_back(i);
    k -= (1LL << mx);
    for(int i = mx - 1 ;i >= 0;i--){
      if(((k >> i) & 1) == 1)
        ret.insert(ret.begin() + i , (int)ret.size());
    }
    return ret;
  }
  
  vector< int > v;
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 90 / 90