Submission #714386

#	Time	Username	Problem	Language	Result	Execution time	Memory
714386		vjudge1	Art Collections (BOI22_art)	C++17	0 / 100	1 ms	208 KiB

art

#include "art.h"
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define size(v) v.size()
#define all(v) v.begin(), v.end()
#define f first
#define s second

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
//
void solve(int N) {
    std::vector<int> R(N);
    for(int i = 0; i < N; ++i){
        R[i] = i + 1;
    }

    for(int i = 0; i < N; i++){
        std::vector<int> temp(N);
        temp = R;
        int val = R[i], curr = i;
        int low = 0, high = N - 1, best = publish(R);
        while(low <= high){
            int mid = (low + high) >> 1;
            swap(temp[mid], temp[curr]);
            int cnt = publish(temp);
            if(cnt > publish(R)){
                swap(temp[mid], temp[curr]);
                if(curr < mid){
                    high = mid - 1;
                }else{
                    low = mid + 1;
                }
            }else{
                best = cnt;
                if(curr < mid){
                    low = mid + 1;
                    curr = mid;
                }else{
                    high = mid - 1;
                    curr = mid;
                }
            }
            R = temp;
        }
    }
    if(!publish(R)) answer(R);
    else{
        for(int i = 0; i < N - 1; i++){
            swap(R[i], R[i + 1]);
            if(!publish(R)){
                answer(R);
            }else{
                swap(R[i], R[i + 1]);
            }
        }
    }

}

Compilation message (stderr)

art.cpp: In function 'void solve(int)':
art.cpp:32:13: warning: unused variable 'val' [-Wunused-variable]
   32 |         int val = R[i], curr = i;
      |             ^~~
art.cpp:33:36: warning: variable 'best' set but not used [-Wunused-but-set-variable]
   33 |         int low = 0, high = N - 1, best = publish(R);
      |                                    ^~~~
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: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30