Submission #949591

#	Time	Username	Problem	Language	Result	Execution time	Memory
949591		ifateen	Art Collections (BOI22_art)	C++17	50 / 100	603 ms	1392 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
//

int cur_ans;
vector<int> v, cur_query;

bool comp(int i, int j) {
    swap(cur_query[i - 1], cur_query[j - 1]);
    int tmp_ans = publish(cur_query);
    swap(cur_query[i - 1], cur_query[j - 1]);
    if (tmp_ans < cur_ans) return false;
    return true;
}

vector<int> merge_sort(int l, int r) {
    if (r < l) return {};
    if (l == r) return {v[l]};
    int mid = (l + r) / 2;
    auto left = merge_sort(l, mid);
    auto right = merge_sort(mid + 1, r);
    vector<int> ret;
    int i = 0, j = 0;
    while (i < left.size() && j < right.size()) {
        if (comp(left[i], right[j])) ret.push_back(left[i++]);
        else ret.push_back(right[j++]);
    }
    while (i < left.size()) ret.push_back(left[i++]);
    while (j < right.size()) ret.push_back(right[j++]);
    return ret;
}

void solve(int N) {
    v.resize(N);
    cur_query.resize(N);
    iota(begin(cur_query), end(cur_query), 1);
    iota(begin(v), end(v), 1);
    cur_ans = publish(v);
    auto ans = merge_sort(0, N - 1);
    answer(ans);
}

Compilation message (stderr)

art.cpp: In function 'std::vector<int> merge_sort(int, int)':
art.cpp:36:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     while (i < left.size() && j < right.size()) {
      |            ~~^~~~~~~~~~~~~
art.cpp:36:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     while (i < left.size() && j < right.size()) {
      |                               ~~^~~~~~~~~~~~~~
art.cpp:40:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     while (i < left.size()) ret.push_back(left[i++]);
      |            ~~^~~~~~~~~~~~~
art.cpp:41:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     while (j < right.size()) ret.push_back(right[j++]);
      |            ~~^~~~~~~~~~~~~~
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: 0 / 20
• Subtask 6: 0 / 30