제출 #969550

#제출 시각아이디문제언어결과실행 시간메모리
969550dubabuba순열 (APIO22_perm)C++17
71.22 / 100
10 ms1432 KiB
#include <bits/stdc++.h> #include "perm.h" using namespace std; typedef long long i64; typedef vector<int> vi; const int mxLOG = 62; vi construct_permutation(i64 K) { i64 k = K - 1; int n = 0; vi t, a; for(int i = mxLOG - 1; i >= 1; i--) { i64 cnt = (1LL << i) - 1LL; while(k >= cnt) { k -= cnt; n += i; t.push_back(i); // cout << " size: " << i << endl; } } int en = n - 1; for(int cnt : t) { int st = en - cnt + 1; for(int i = st; i <= en; i++) a.push_back(i); en = st - 1; } // for(int x : a) // cout << x << ' '; // cout << endl; return a; }
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