Submission #1026426

#	Time	Username	Problem	Language	Result	Execution time	Memory
1026426		gyg	Art Collections (BOI22_art)	C++17	100 / 100	934 ms	1916 KiB

art

#include "art.h"
#include <bits/stdc++.h>
using namespace std;
const int MAX_N = 4e3 + 5;

int n;
array<int, MAX_N> pos;

void move(vector<int>& x) {
    assert(x.size());
    int y = x[0];
    x.erase(x.begin());
    x.push_back(y);
}
void solve(int _n) {
    n = _n;

    vector<int> list;
    for (int i = 1; i <= n; i++) list.push_back(i);
    int prev = publish(list);
    
    for (int i = 1; i < n; i++) {
        move(list);
        int cur = publish(list);
        pos[i] = (prev - cur + n - 1) / 2 + 1;
        prev = cur;
    }

    unordered_set<int> vals;
    for (int i = 1; i <= n; i++)
        if (pos[i] != 0) vals.insert(pos[i]);
    for (int i = 1; i <= n; i++) {
        if (pos[i] != 0) continue;
        for (int j = 1; j <= n; j++)
            if (!vals.count(j)) pos[i] = j;
    }
    
    vector<int> ans(n);
    for (int i = 1; i <= n; i++) ans[pos[i] - 1] = i;
    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