Submission #1139202

#	Time	Username	Problem	Language	Result	Execution time	Memory
1139202		AHOKA	Xoractive (IZhO19_xoractive)	C++20	0 / 100	3 ms	408 KiB

Xoractive

#include <bits/stdc++.h>
#include "interactive.h"

using namespace std;
 
#define threesum cin.tie(NULL); cout.tie(NULL); ios_base::sync_with_stdio(false)
#define all(a) a.begin(), a.end()
#define F first
#define S second
//#define int long long
#define double long double
#define pii pair<int, int>
#define ppp pair<int, pii>
#define dout cout << fixed << setprecision(15)
#define mid ((l + r) / 2)
#define lc (2 * id)
#define rc (lc + 1)

//const int maxn = 3e5 + 10, maxm = 1e3 + 10, oo = 1e18 + 10, lg = 8, sq = 350, mod = 1e9 + 7;

vector<int> guess(int n){
	vector<int> a(n);

	a[0] = ask(1);

	map<int, int> mp;

	for (int b = 0; b < 7;b++){
		vector<int> u, v, f;

		for (int i = 2; i <= n; i++)
			if(i & (1ll << b))
				v.push_back(i);

		if(!v.size())
			continue;

		u = get_pairwise_xor(v);

		v.push_back(1);

		f = get_pairwise_xor(v);

		multiset<int> s;

		for(auto i : f)
			s.insert(i);

		for(auto i : u)
			s.erase(s.find(i));

		for(auto j : s)
			mp[j ^ a[1]] |= (1ll << b);
	}

	vector<pii> vp;

	for(auto [x, msk] : mp)
		vp.push_back({msk, x});

	set<int> used;
	used.insert(a[1]);

	sort(all(vp));
	reverse(all(vp));

	for(auto [msk, x] : vp)
		if(used.find(x) == used.end()){
			a[msk - 1] = x;
			used.insert(x);
		}

	return a;
}

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