Submission #865229

#	Time	Username	Problem	Language	Result	Execution time	Memory
865229		sleepntsheep	Art Collections (BOI22_art)	C++17	100 / 100	1213 ms	1820 KiB

art

#include "art.h"
#include <iostream>
#include <algorithm>
#include <numeric>
#include <vector>
//
// --- 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
//
void solve(int N)
{
    std::vector<int> order(N), real(N, -1);
    int c = 1;
    std::iota(order.begin(), order.end(), 1);

    int last = -1;
    for (; c < N; ++c)
    {
        int delta = last;
        if (last == -1)
        {
            auto it = std::find(order.begin(), order.end(), c+1);
            std::swap(order[1], *it);
            std::swap(order[0], *std::find(order.begin(), order.end(), c));
            delta = publish(order);
        }
        order.erase(order.begin());
        order.push_back(c);
        last = publish(order);
        delta = delta - last;
        int freq_lesser_rank = (N - 1 + delta) / 2;
        real[freq_lesser_rank] = c;
    }

    for (int i = 1; i <= N; ++i)
        if (std::find(real.begin(), real.end(), i) == real.end())
            *std::find(real.begin(), real.end(), -1) = i;

    answer(real);
}

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