제출 #973767

#제출 시각아이디문제언어결과실행 시간메모리
973767Pannda순열 (APIO22_perm)C++17
91.33 / 100
1 ms440 KiB
#include "perm.h" #include <bits/stdc++.h> using namespace std; vector<int> construct_permutation(long long k) { int b = 63 - __builtin_clzll(k); k -= 1LL << b; int c = __builtin_popcountll(k); vector<int> key(b); iota(key.begin(), key.end(), c); for (int i = 0; i < c; i++) { int a = 63 - __builtin_clzll(k & -k); k -= 1LL << a; key.insert(key.begin() + b - a, i); } return key; }
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