Submission #587760

#	Time	Username	Problem	Language	Result	Execution time	Memory
587760		Noobie_99	Art Collections (BOI22_art)	C++17	70 / 100	1538 ms	652 KiB

art

#include <bits/stdc++.h>
#include "art.h"
using namespace std;
using ll = long long;
#define debug(x) cerr << "[(" << __LINE__ << ") " << #x << "]: " << (x) << endl;

//
// --- 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
//
vector<int> invert(vector<int>& a) {
    vector<int> b(a.size());
    for (int i=0; i<(int)a.size(); i++) {
        b[a[i]-1] = i+1;
    }
    return b;
}

void solve(int n) {

    int lower[n], higher[n];
    for (int i=0; i<n; i++) {
        vector<int> order(n-1);
        iota(order.begin(), order.end(), 1);
        order.insert(order.begin() + i, n);

        higher[i] = publish(invert(order));

        order = vector<int>(n-1);
        iota(order.begin(), order.end(), 2);
        order.insert(order.begin() + i, 1);

        lower[i] = publish(invert(order));
    }

    vector<int> ans;
    for (int i=0; i<n; i++) {
        for (int j=0; j<n; j++) {
            if (higher[j] == lower[j] + n-1 - 2*i) {
                ans.push_back(j+1);
                break;
            }
        }
    }
    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: 0 / 30