제출 #660606

#제출 시각아이디문제언어결과실행 시간메모리
660606Bovmelo순열 (APIO22_perm)C++17
100 / 100
2 ms340 KiB
#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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