Submission #1013053

#	Time	Username	Problem	Language	Result	Execution time	Memory
1013053		NintsiChkhaidze	Xoractive (IZhO19_xoractive)	C++17	100 / 100	6 ms	852 KiB

Xoractive

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

vector<int> guess(int n) {
	
	map <int,int> mp;
	vector <int> ans(n);
	ans[0] = ask(1);
	
	for (int b = 0; b < 7; b++) {
		vector <int> v;
		for (int i = 2; i <= n; i++){
			if (((i >> b) & 1)) v.pb(i);
		}
		
		if (!v.size()) continue;
		vector <int> ans1 = get_pairwise_xor(v);
		v.pb(1);
		vector <int> ans2 = get_pairwise_xor(v);
		
		multiset <int> st1,st2;
		for (int x: ans1) st1.insert(x);
		for (int x: ans2) st2.insert(x);
		while (st1.size()){
			st2.erase(st2.find(*st1.begin()));
			st1.erase(st1.begin());
		}
		
		st2.erase(st2.find(0));
		for (int x: st2){
			mp[x ^ ans[0]] |= (1<<b);
		}
	}
	
	for (auto [x,y]: mp)
		ans[y - 1] = x;
	
	return ans;
}

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