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답안 #984157

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
984157 2024-05-16T10:50:30 Z vjudge1 순열 (APIO22_perm) C++17
71.2154 / 100
 67 ms 1524 KB 
//#include "perm.h"
#include<bits/stdc++.h>
#define sz size()
#define ll long long
using namespace std;
mt19937_64 rnd(990910211394901);
vector<int> construct_permutation(ll k)
{
    ll z = 1, sum = 0, d;
    vector<ll> x;

    for(ll j = 59; j > 0; --j)
    {
        if((z << j) > k) continue;
        d = j;
        x.push_back(j);
        k -= (z << j);
        break;
    }


    ll _k = k;
    for(ll t = 1; t <= 1000; ++t)
        for(ll j = 59; j > 0; --j)
        {
            if((z << j) - 1 > _k) continue;
            x.push_back(j);
            _k -= (z << j) - 1;
            sum += j;
        }

    for(ll i = 1; i <= 90; ++i)
    {
        ll t = k - i;
        if(t < 2) break;
        ll cnt = d;
        vector<ll> _x(1, d);
        for(ll j = 59; j > 0; --j)
        {
            if((z << j) > t) continue;
            _x.push_back(j);
            cnt += j;
            t -= (z << j);
        }
        sort(_x.begin(), _x.end());
        while(_x.sz && _x.sz < i && _x.back() > 1)
        {
            sort(_x.begin(), _x.end());
            ll val = _x.back();
            _x.pop_back();
            _x.push_back(val - 1);
            _x.push_back(val - 1);
            cnt += val - 2;
        }
        if(cnt > 0 && cnt < sum && i == (ll)_x.sz)
            sum = cnt, x = _x;
    }

    ll cur = 0;
    vector<int> ans;
    for(ll t : x)
    {
        for(ll i = cur + t; i > cur; --i)
            ans.push_back(i - 1);
        cur += t;
    }
    reverse(ans.begin(), ans.end());
    return ans;
}

//signed main()
//{
//    ios_base::sync_with_stdio(0);
//    cin.tie(0), cout.tie(0);
//    ll n;
//    cin >> n;
//    for(auto i : construct_permutation(n))
//        cout << i << ' ';
//}

Compilation message

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:46:30: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   46 |         while(_x.sz && _x.sz < i && _x.back() > 1)
      |                        ~~~~~~^~~
perm.cpp:42:17: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized]
   42 |             cnt += j;
      |             ~~~~^~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 4 ms 600 KB Output is correct

Subtask #2
61.215384618 / 90.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Partially correct 58 ms 452 KB Partially correct
4 Partially correct 44 ms 348 KB Partially correct
5 Partially correct 53 ms 596 KB Partially correct
6 Partially correct 61 ms 596 KB Partially correct
7 Partially correct 61 ms 952 KB Partially correct
8 Partially correct 65 ms 1212 KB Partially correct
9 Correct 19 ms 348 KB Output is correct
10 Partially correct 56 ms 1524 KB Partially correct
11 Partially correct 61 ms 952 KB Partially correct
12 Partially correct 62 ms 848 KB Partially correct
13 Partially correct 67 ms 1104 KB Partially correct