Submission #977710

#	Time	Username	Problem	Language	Result	Execution time	Memory
977710		KK_1729	Art Collections (BOI22_art)	C++17	100 / 100	1411 ms	1772 KiB

art

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

// #define int long long 
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define pb push_back
#define all(a) a.begin(), a.end()
#define endl "\n"

//
// --- 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) {
    int n = N;
    vector<int> order = {};
    FOR(i,1,n+1) order.pb(i);
    vector<int> ans(n, -1);
    int prev = publish(order);
    FOR(i,0,n-1){
        vector<int> new_order;
        new_order.pb(order[n-1]);
        FOR(i,0,n-1) new_order.pb(order[i]);
        order = new_order;
        int q = publish(order);
        int c = order[0];
        ans[((n-1)+(q-prev))/2] = c;
        prev = q;
    }
    vector<int> done(n+1);
    FOR(i,0,n) done[ans[i]] = 1;
    int pos = -1;
    FOR(i,0,n){
        if (ans[i] == -1) pos = i;
    }
    int val = 0;
    FOR(i,1,n+1){
        if (!done[i]) val = i;
    }
    ans[pos] = val;
    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