Submission #721605

#	Time	Username	Problem	Language	Result	Execution time	Memory
721605		sunnat	Art Collections (BOI22_art)	C++17	100 / 100	1587 ms	644 KiB

art

#include "art.h"
//
// --- Sample implementation for the task art ---
//
// To compile this program with the sample grader, place:
//     art.h art_sample.cpp sample_grader.cpp
// in a single folder, then open the terminal in this directory (right-click onto an empty spot in the directory,
// left click on "Open in terminal") and enter e.g.:
//     g++ -std=c++17 art_sample.cpp sample_grader.cpp
// in this folder. This will create a file a.out in the current directory which you can execute from the terminal
// as ./a.out
// See task statement or sample_grader.cpp for the input specification
//

#include <iostream>
using namespace std;

int best_inv, cur_inv;
vector<int> order;

void solve(int N) {
    for(int i = 1; i <= N; i ++)
        order.push_back(i);
    
    best_inv = publish(order);

    for(int i = 1, k; i < N; i ++){
        swap(order[i], order[0]);
        cur_inv = publish(order);
        swap(order[i], order[0]);
        if(cur_inv < best_inv){
            for(int j = i-1; j >= 0; j --)
                swap(order[j], order[j+1]);
            best_inv -= i;
        }
        else{
            k = (cur_inv - best_inv - 1) / 2 + 1;
            for(int j = i; j > k; j --)
                swap(order[j], order[j-1]);
            best_inv -= i - k;
        }
    }

    answer(order);
}

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