Submission #660606

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
660606	2022-11-22 15:13:37	Bovmelo	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;
vector<int> construct_permutation(long long k) {
   vector<int> a;
   int c = 0, t = 0;
   for (int i = __lg(k) - 1; ~i; i--) {
      a.push_back(t++);
      if (k >> i & 1) {
         if (i > 0 && (k >> (i - 1) & 1) && c > 1)
            a.push_back(t++), a.insert(a.begin() + 2, t++), i--;
         else
            a.insert(a.begin(), t++), c++;
      }
   }
   return a;
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 90 / 90