Submission #688557

#	Time	Username	Problem	Language	Result	Execution time	Memory
688557		Alcabel	Art Collections (BOI22_art)	C++17	100 / 100	1537 ms	868 KiB

art

#include <art.h>
#include <bits/stdc++.h>
using namespace std;

void solve(int n) {
    vector<int> p(n);
    iota(p.begin(), p.end(), 1);
    vector<int> sorted = {p[0]}, posOf(n);
    int was = publish(p);
    for (int i = 1; i < n; ++i) {
        swap(p[0], p[i]);
        int cur = publish(p);
        swap(p[0], p[i]);
        sorted.emplace_back(p[i]);
        posOf[p[i] - 1] = i;
        bool isNewGreater = false;
        for (int j = i; j >= 0; --j) {
            // j is current pos of p[i]
            // - posOf[p[0] - 1] - (i - posOf[p[i] - 1]) + isNewGreater
            // + (i - posOf[p[0] - 1]) + posOf[p[i] - 1] - (1 - isNewGreater)
            if (was - posOf[p[0] - 1] - (i - posOf[p[i] - 1]) + isNewGreater + (i - posOf[p[0] - 1]) + posOf[p[i] - 1] - (1 - isNewGreater) == cur) {
                break;
            }
            assert(j > 0);
            if (sorted[j - 1] == p[0]) {
                isNewGreater = true;
            }
            --posOf[p[i] - 1];
            ++posOf[sorted[j - 1] - 1];
            swap(sorted[j - 1], sorted[j]);
        }
    }
    answer(sorted);
}

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30