Submission #951326

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
951326	2024-03-21T15:40:50 Z	GrandTiger1729	Toxic Gene (NOI23_toxic)	C++17	98.65 / 100	40 ms	520 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)
	{
		shuffle(ord.begin() + i, ord.end(), mt19937(time(0) + 777771449));
		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:53:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for (int k = j - i; k < qry.size(); k++)
      |                         ~~^~~~~~~~~~~~
toxic.cpp:90:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |     for (int k = mid - l; k < qry.size(); k++)
      |                           ~~^~~~~~~~~~~~

Subtask #1

98.65 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	33 ms	520 KB	Output is correct
3	Correct	32 ms	504 KB	Output is correct
4	Correct	34 ms	520 KB	Output is correct
5	Correct	37 ms	348 KB	Output is correct
6	Correct	36 ms	504 KB	Output is correct
7	Correct	40 ms	492 KB	Output is correct
8	Correct	36 ms	344 KB	Output is correct
9	Correct	37 ms	348 KB	Output is correct
10	Correct	36 ms	348 KB	Output is correct
11	Correct	36 ms	348 KB	Output is correct
12	Correct	33 ms	344 KB	Output is correct
13	Correct	36 ms	348 KB	Output is correct
14	Correct	32 ms	516 KB	Output is correct
15	Correct	38 ms	504 KB	Output is correct
16	Correct	37 ms	348 KB	Output is correct
17	Correct	37 ms	348 KB	Output is correct
18	Correct	37 ms	512 KB	Output is correct
19	Correct	37 ms	504 KB	Output is correct
20	Correct	37 ms	348 KB	Output is correct
21	Correct	37 ms	348 KB	Output is correct
22	Correct	32 ms	348 KB	Output is correct
23	Correct	31 ms	348 KB	Output is correct
24	Correct	32 ms	348 KB	Output is correct
25	Correct	33 ms	348 KB	Output is correct
26	Correct	33 ms	516 KB	Output is correct
27	Correct	32 ms	348 KB	Output is correct
28	Correct	33 ms	516 KB	Output is correct
29	Correct	37 ms	504 KB	Output is correct
30	Partially correct	39 ms	348 KB	Partially correct
31	Correct	37 ms	348 KB	Output is correct
32	Correct	37 ms	348 KB	Output is correct
33	Correct	37 ms	344 KB	Output is correct
34	Partially correct	36 ms	348 KB	Partially correct
35	Partially correct	37 ms	508 KB	Partially correct
36	Correct	5 ms	348 KB	Output is correct