Submission #1286220

#	Time	Username	Problem	Language	Result	Execution time	Memory
1286220		SmuggingSpun	Art Collections (BOI22_art)	C++20	50 / 100	71 ms	432 KiB

art

#include "art.h"
#include<bits/stdc++.h>
using namespace std;
void solve(int n){
	if(n <= 6){
		vector<int>p(n);
		iota(p.begin(), p.end(), 1);
		do{
			if(publish(p) == 0){
				answer(p);
				return;
			}			
		} while(next_permutation(p.begin(), p.end()));
	}
	if(n <= 444){
		vector<int>p(n), ans(1, 1);
		iota(p.begin(), p.end(), 1);
		for(int i = 2, init = publish(p); i <= n; i++){
			int low = 0, high = i - 2, pos = 0;
			while(low <= high){
				int mid = (low + high) >> 1;
				swap(p[i - 1], p[ans[mid] - 1]);
				if(publish(p) > init){
					low = pos = mid + 1;
				}
				else{
					high = mid - 1;
				}
				swap(p[i - 1], p[ans[mid] - 1]);
			}
			ans.insert(ans.begin() + pos, i);
		}
		answer(ans);
		return;
	}
	vector<int>ans(n, -1), p(n);
	iota(p.begin(), p.end(), 1);
	for(int i = 1, init = publish(p); i < n; i++){
		p.insert(p.begin(), p.back());
		p.pop_back();
		int d = publish(p) - init;
		ans[(d + init) >> 1] = p[0];
		init += d;
	}
	ans[find(ans.begin(), ans.end(), -1) - ans.begin()] = 1;
	answer(ans);
}

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30