Submission #950999

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
950999	2024-03-21T03:52:10 Z	GrandTiger1729	Toxic Gene (NOI23_toxic)	C++17	93.25 / 100	76 ms	1492 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);
	srand(mt19937(time(0))());
	mt19937 randint(time(0));
	random_shuffle(ord.begin(), ord.end());
	string ans(n + 1, 'R');
	int cnt = 0;
	int tt = -1;
	vector<int> stk;
	int i = 0;
	while (cnt < T && i < n)
	{
		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();
				}
			}
		}
		auto make_query = [&](int mid)
		{
			vector<int> qry;
			for (int k = i; 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;
		};
		int l = i, r = j;
		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 - i);
				for (int k = mid - i; k < qry.size(); k++)
				{
					ans[qry[k]] = (res >> k & 1) ? 'S' : 'R';
				}
				for (int k = 0; k < x; k++)
				{
					stk.pop_back();
				}
				r = mid;
			}
		}
		vector<int> qry = make_query(l);
		for (int k = 0; k < l - i; k++)
		{
			ans[qry[k]] = (xx >> k & 1) ? 'S' : 'R';
		}
		cerr << "ans " << ans << endl;
		ans[ord[l]] = 'T';
		cerr << "OK " << l << ' ' << ord[l] << endl;
		i = l + 1;
		tt = ord[l];
		cnt++;
	}
	while (i < n)
	{
		stk.push_back(ord[i++]);
	}
	cerr << ans << endl;
	for (int j = 0; j < stk.size(); j++)
	{
		cerr << stk[j] << endl;
	}
	cerr << "tt " << tt << endl;
	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';
		}
	}
	cerr << ans << endl;
	for (int j = 1; j <= n; j++)
	{
		answer_type(j, ans[j]);
	}
}

Compilation message

toxic.cpp: In function 'void determine_type(int)':
toxic.cpp:55:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for (int k = j - i; k < qry.size(); k++)
      |                         ~~^~~~~~~~~~~~
toxic.cpp:92:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |     for (int k = mid - i; k < qry.size(); k++)
      |                           ~~^~~~~~~~~~~~
toxic.cpp:120:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  120 |  for (int j = 0; j < stk.size(); j++)
      |                  ~~^~~~~~~~~~~~

Subtask #1

93.25 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	57 ms	1072 KB	Output is correct
3	Correct	58 ms	852 KB	Output is correct
4	Correct	66 ms	1104 KB	Output is correct
5	Correct	48 ms	1232 KB	Output is correct
6	Correct	44 ms	1264 KB	Output is correct
7	Correct	44 ms	1484 KB	Output is correct
8	Correct	49 ms	1360 KB	Output is correct
9	Correct	47 ms	1364 KB	Output is correct
10	Correct	44 ms	1316 KB	Output is correct
11	Correct	45 ms	1360 KB	Output is correct
12	Partially correct	57 ms	1108 KB	Partially correct
13	Correct	56 ms	992 KB	Output is correct
14	Correct	64 ms	1104 KB	Output is correct
15	Correct	45 ms	1356 KB	Output is correct
16	Correct	45 ms	1364 KB	Output is correct
17	Correct	45 ms	1344 KB	Output is correct
18	Partially correct	45 ms	1360 KB	Partially correct
19	Correct	46 ms	1364 KB	Output is correct
20	Partially correct	47 ms	1368 KB	Partially correct
21	Correct	44 ms	1360 KB	Output is correct
22	Correct	59 ms	1116 KB	Output is correct
23	Correct	57 ms	1032 KB	Output is correct
24	Correct	57 ms	1108 KB	Output is correct
25	Correct	56 ms	980 KB	Output is correct
26	Correct	56 ms	1112 KB	Output is correct
27	Correct	76 ms	1104 KB	Output is correct
28	Correct	55 ms	1128 KB	Output is correct
29	Correct	46 ms	1364 KB	Output is correct
30	Correct	47 ms	1372 KB	Output is correct
31	Correct	46 ms	1364 KB	Output is correct
32	Correct	49 ms	1360 KB	Output is correct
33	Correct	46 ms	1360 KB	Output is correct
34	Partially correct	45 ms	1492 KB	Partially correct
35	Partially correct	49 ms	1428 KB	Partially correct
36	Correct	6 ms	348 KB	Output is correct