oj.uz

답안 #973886

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
973886 2024-05-02T12:17:32 Z Pannda 순열 (APIO22_perm) C++17
100 / 100
 2 ms 668 KB 
#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;
    vector<int> key(b);
    iota(key.begin(), key.end(), 0);
    int cnt = 0;
    while (k > 0) {
        b = 63 - __builtin_clzll(k);
        if (cnt >= 1 && b > 0 && ((k >> (b - 1)) & 1)) {
            b--;
            for (int &v : key) {
                if (v >= b) v++;
            }
            key.insert(key.end() - 2, b);
            k -= 3LL << b;
        } else {
            for (int &v : key) {
                if (v >= b) v++;
            }
            key.push_back(b);
            k -= 1LL << b;
            cnt++;
        }
    }
    return key;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
90.0 / 90.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 2 ms 668 KB Output is correct
11 Correct 1 ms 432 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct