Submission #907099

#	Time	Username	Problem	Language	Result	Execution time	Memory
907099		vjudge1	Xoractive (IZhO19_xoractive)	C++17	0 / 100	4 ms	600 KiB

Xoractive

#include <bits/stdc++.h>
#include "interactive.h"
using namespace std;

#define ll long long
#define ull unsigned long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define f first
#define s second
#define uint unsigned int
#define all(vc) vc.begin(), vc.end()

vector<int> guess(int n)
{
	vector<int> ans;
	ans.resize(n);
	ans[0] = ask(1);

	vector<vector<int>> goodPoses(7);
	for (int i = 1; i < n; ++i)
		for (int bit = 0; bit < 7; ++bit)
			if (i & (1 << bit))
				goodPoses[bit].pb(i + 1);

	map<int, int> poses;
	for (int bit = 0; bit < 7; ++bit)
	{
		vector<int> x = get_pairwise_xor(goodPoses[bit]);
		goodPoses[bit].pb(1);
		vector<int> y = get_pairwise_xor(goodPoses[bit]);
		map<int, int> cnt;
		cnt[0]--;
		for (auto el : y)
			cnt[el]--;
		vector<int> vals;
		for (auto el : x)
		{
			cnt[el]++;
			if (cnt[el])
				poses[el ^ ans[0]] += (1 << bit);
		}
	}
	for (auto [v, pos] : poses)
		ans[pos] = v;

	return ans;
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 94