Submission #951317

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
951317	2024-03-21T15:35:23 Z	GrandTiger1729	Toxic Gene (NOI23_toxic)	C++17	97.3 / 100	46 ms	760 KB

toxic

#include "toxic.h"
#include <bits/stdc++.h>
using namespace std;
 
const int K = 8, T = 30;
vector<int> encode(vector<int> qry)
{
	int n = qry.size();
	vector<int> ret;
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < (1 << i); j++)
		{
			ret.push_back(qry[i]);
		}
	}
	return ret;
}
void determine_type(int n)
{
	vector<int> ord(n);
	iota(ord.begin(), ord.end(), 1);
	string ans(n + 1, 'R');
	int cnt = 0;
	int tt = -1;
	vector<int> stk;
	int i = 0;
	while (cnt < T && i < n)
	{
		srand(mt19937(time(0))() + 777771449);
		random_shuffle(ord.begin() + i, ord.end());
		int j = min(n, i + K);
		int xx = -1;
		{
			vector<int> qry;
			for (int k = i; k < j; k++)
			{
				qry.push_back(ord[k]);
			}
			int x = min(stk.size(), K - qry.size());
			for (int k = 0; k < x; k++)
			{
				qry.push_back(stk.end()[-1 - k]);
			}
			xx = query_sample(encode(qry));
			if (xx == (1 << qry.size()) - 1)
			{
				stk.insert(stk.end(), qry.begin(), qry.end());
				i = j;
				continue;
			}
			else
			{
				for (int k = j - i; k < qry.size(); k++)
				{
					ans[qry[k]] = (xx >> k & 1) ? 'S' : 'R';
				}
				for (int k = 0; k < x; k++)
				{
					stk.pop_back();
				}
			}
		}
		int l = i, r = j;
		auto make_query = [&](int mid)
		{
			vector<int> qry;
			for (int k = l; k < mid; k++)
			{
				qry.push_back(ord[k]);
			}
			int x = min(stk.size(), K - qry.size());
			for (int k = 0; k < x; k++)
			{
				qry.push_back(stk.end()[-1 - k]);
			}
			return qry;
		};
		while (l < r - 1)
		{
			int mid = (l + r) / 2;
			vector<int> qry = make_query(mid);
			int res = query_sample(encode(qry));
			if (res == (1 << qry.size()) - 1)
			{
				l = mid;
			}
			else
			{
				int x = qry.size() - (mid - l);
				for (int k = mid - l; k < qry.size(); k++)
				{
					ans[qry[k]] = (res >> k & 1) ? 'S' : 'R';
				}
				for (int k = 0; k < x; k++)
				{
					stk.pop_back();
				}
				r = mid;
			}
		}
		for (int k = 0; k < l - i; k++)
		{
			ans[ord[i + k]] = (xx >> k & 1) ? 'S' : 'R';
		}
		ans[ord[l]] = 'T';
		i = l + 1;
		tt = ord[l];
		cnt++;
	}
	while (i < n)
	{
		stk.push_back(ord[i++]);
	}
	while (stk.size())
	{
		int x = min((int)stk.size(), K);
		vector<int> qry;
		for (int k = 0; k < x; k++)
		{
			qry.push_back(stk.back());
			stk.pop_back();
		}
		auto tmp = encode(qry);
		tmp.push_back(tt);
		int res = query_sample(tmp);
		for (int k = 0; k < (int)qry.size(); k++)
		{
			ans[qry[k]] = (res >> k & 1) ? 'S' : 'R';
		}
	}
	for (int j = 1; j <= n; j++)
	{
		answer_type(j, ans[j]);
	}
}

Compilation message

toxic.cpp: In function 'void determine_type(int)':
toxic.cpp:54:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int k = j - i; k < qry.size(); k++)
      |                         ~~^~~~~~~~~~~~
toxic.cpp:91:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for (int k = mid - l; k < qry.size(); k++)
      |                           ~~^~~~~~~~~~~~

Subtask #1

97.3 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	38 ms	344 KB	Output is correct
3	Correct	37 ms	344 KB	Output is correct
4	Correct	39 ms	348 KB	Output is correct
5	Correct	44 ms	344 KB	Output is correct
6	Correct	46 ms	492 KB	Output is correct
7	Correct	43 ms	348 KB	Output is correct
8	Correct	43 ms	348 KB	Output is correct
9	Correct	43 ms	348 KB	Output is correct
10	Correct	43 ms	348 KB	Output is correct
11	Correct	43 ms	348 KB	Output is correct
12	Correct	38 ms	520 KB	Output is correct
13	Correct	38 ms	348 KB	Output is correct
14	Correct	37 ms	348 KB	Output is correct
15	Partially correct	44 ms	504 KB	Partially correct
16	Correct	45 ms	732 KB	Output is correct
17	Correct	43 ms	500 KB	Output is correct
18	Partially correct	43 ms	344 KB	Partially correct
19	Partially correct	44 ms	348 KB	Partially correct
20	Correct	44 ms	348 KB	Output is correct
21	Correct	44 ms	348 KB	Output is correct
22	Correct	38 ms	348 KB	Output is correct
23	Correct	41 ms	760 KB	Output is correct
24	Correct	38 ms	600 KB	Output is correct
25	Correct	39 ms	344 KB	Output is correct
26	Correct	38 ms	504 KB	Output is correct
27	Correct	38 ms	512 KB	Output is correct
28	Correct	38 ms	348 KB	Output is correct
29	Correct	43 ms	348 KB	Output is correct
30	Correct	46 ms	344 KB	Output is correct
31	Correct	44 ms	504 KB	Output is correct
32	Correct	43 ms	484 KB	Output is correct
33	Correct	43 ms	344 KB	Output is correct
34	Correct	42 ms	348 KB	Output is correct
35	Partially correct	45 ms	344 KB	Partially correct
36	Correct	6 ms	348 KB	Output is correct