Submission #721566

#	Time	Username	Problem	Language	Result	Execution time	Memory
721566		MDSPro	Art Collections (BOI22_art)	C++17	20 / 100	96 ms	256 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 <algorithm>
#include <numeric>

using namespace std;
void solve(int N) {
    vector<int> p(N); iota(p.begin(),p.end(),1);
    int x = publish(p);
    vector<int> cnt(N+1,0);
    for(int i = 0; i < N; ++i){
        for(int j = i+1; j < N; ++j){
            swap(p[i],p[j]);
            int y = publish(p);
            swap(p[i],p[j]);

            if(y > x) cnt[p[i]]++;
            else cnt[p[j]]++;
        }
    }

    vector<pair<int,int>> v(N);
    for(int i = 0; i < N; ++i) v[i] = {cnt[i+1],p[i]};
    sort(v.begin(),v.end());
    for(int i = 0; i < N; ++i) p[N-i-1] = v[i].second;

    answer(p);
}

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: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30