Submission #598044

#	Time	Username	Problem	Language	Result	Execution time	Memory
598044		jhnah917	Art Collections (BOI22_art)	C++17	35 / 100	192 ms	288 KiB

art

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

bool compare(vector<int> &ord, int a, int b){
    if(a == b) return false;
    int pa = find(ord.begin(), ord.end(), a) - ord.begin();
    int pb = find(ord.begin(), ord.end(), b) - ord.begin();
    int t1 = publish(ord);
    swap(ord[pa], ord[pb]);
    int t2 = publish(ord);
    swap(ord[pa], ord[pb]);
    return t1 < t2;
}

void merge_sort(vector<int> &ord, int s, int e){
    if(s >= e) return;
    int m = (s + e) / 2;
    merge_sort(ord, s, m);
    merge_sort(ord, m+1, e);

    vector<int> tmp(ord.size());
    int i = s, j = m+1, k = s;
    while(i <= m && j <= e){
        if(compare(ord, ord[i], ord[j])) tmp[k++] = ord[i++];
        else tmp[k++] = ord[j++];
    }
    while(i <= m) tmp[k++] = ord[i++];
    while(j <= e) tmp[k++] = ord[j++];
    for(k=s; k<=e; k++) ord[k] = tmp[k];
}

void solve(int n){
    vector<int> ord(n);
    iota(ord.begin(), ord.end(), 1);
    merge_sort(ord, 0, n-1);
    answer(ord);
}

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