Submission #1253648

#	Time	Username	Problem	Language	Result	Execution time	Memory
1253648		mingga	Library (JOI18_library)	C++20	100 / 100	132 ms	472 KiB

library

// Author: caption_mingle
#include "bits/stdc++.h"
#include "library.h"

using namespace std;

#define ln "\n"
#define pb push_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
#define ll long long
const int mod = 1e9 + 7;
const int inf = 2e9;


int query(vector<int> a, int n) {
	vector<int> vec(n, 0);
	for(int x : a) {
		vec[x - 1] = 1;
	}
	return Query(vec);
}


void Solve(int n) {
	if(n == 1) {
		Answer({1});
		return;
	}
	vector<int> cand;
	for(int i = 1; i <= n; i++) {
		cand.pb(i);
	}
	vector<int> ans;
	for(int i = 0; i < sz(cand); i++) {
		vector<int> a;
		int x = cand[i];
		for(int j = 1; j <= n; j++) {
			if(j == x) continue;
			a.pb(j);
		}
		if(query(a, n) == 1) {
			ans.pb(x);
			cand.erase(cand.begin() + i);
			break;
		}
	}
	for(int i = 2; i <= n; i++) {
		int l = 0, r = sz(cand) - 1;
		int nxt = 0;
		while(l <= r) {
			int m = (l + r) >> 1;
			vector<int> que;
			for(int j = 0; j <= m; j++) que.pb(cand[j]);
			int t1 = query(que, n);
			for(int x : ans) que.pb(x);
			int t2 = query(que, n);
			if(t1 == t2) {
				r = m - 1;
				nxt = m;
			} else l = m + 1;
		}
		ans.pb(cand[nxt]);
		cand.erase(cand.begin() + nxt);
	}
	Answer(ans);
}

• Subtask 1: 19 / 19
• Subtask 2: 81 / 81