Submission #693976

#	Time	Username	Problem	Language	Result	Execution time	Memory
693976		finn__	Art Collections (BOI22_art)	C++17	100 / 100	1634 ms	752 KiB

art

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

void cyclic_shift(vector<int> &p)
{
    int x = p.back();
    for (int i = 0; i < p.size(); i++)
        swap(x, p[i]);
}

int get_index(vector<int> const &x, int i)
{
    i = x.size() - i - 1;
    return (x.size() + x[(i + 1) % x.size()] - x[i] - 1) / 2;
}

void solve(int N)
{
    vector<int> p(N);
    for (int i = 0; i < N; i++)
        p[i] = i + 1;

    vector<int> x(N);
    for (int i = 0; i < N; i++)
    {
        x[i] = publish(p);
        cyclic_shift(p);
    }

    for (int i = 0; i < N; i++)
        p[get_index(x, i)] = i + 1;

    answer(p);
}

Compilation message (stderr)

art.cpp: In function 'void cyclic_shift(std::vector<int>&)':
art.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < p.size(); i++)
      |                     ~~^~~~~~~~~~
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