Submission #983304

#	Time	Username	Problem	Language	Result	Execution time	Memory
983304		MercubytheFirst	Art Collections (BOI22_art)	C++17	100 / 100	1228 ms	1836 KiB

art

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


/*
higher + lower = N - 1
higher - lower = prev - cur
higher = (N - 1 + prev - cur) / 2
*/
void solve(int N) {
  vector<int> order(N), ans(N, -37);
  iota(order.begin(), order.end(), 1);
  int prev = publish(order), cur = -1;
  for(int i = 0; i < N - 1; ++i) {
    int index = order[0];
    order.erase(order.begin());
    order.push_back(index);
    cur = publish(order);
    ans[(N - 1 + prev - cur)/2] = index;
    prev = cur;
  }
  for(int i = 0; i < N; ++i) {
    if(ans[i] == -37) {
      ans[i] = order[0];
    }
  }
  answer(ans);
}

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