Submission #920473

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
920473	2024-02-02 15:19:50	SmuggingSpun	Permutation (APIO22_perm)	C++17	100 / 100	2 ms	600 KiB

perm

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#include "perm.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<int>construct_permutation(ll k){
  vector<int>ans;
  for(int i = 63 - __builtin_clzll(k) - 1, current = 0, front_cnt = 0; i > -1; i--){
    ans.emplace_back(current++);
    if((1LL << i) & k){
      if(i > 0 && front_cnt > 1 && ((1LL << (i - 1)) & k)){
        ans.emplace_back(current++);
        ans.insert(ans.begin() + 2, current++);
        i--;
      }
      else{
        ans.insert(ans.begin(), current++);
        front_cnt++;
      }
    }
  }
  return ans;
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 90 / 90