Submission #910939

#	Time	Username	Problem	Language	Result	Execution time	Memory
910939		daoquanglinh2007	Xoractive (IZhO19_xoractive)	C++17	0 / 100	2 ms	344 KiB

Xoractive

#include <bits/stdc++.h>
#include "interactive.h"
using namespace std;
 
#define isz(a) (int)(a).size()
#define pii pair <int, int>
#define fi first
#define se second
#define mp make_pair
 
map <int, int> cnt[7], tmp;
 
vector <int> comp(vector <int> a, vector <int> b){
	vector <int> c(0);
	int j = 0;
	for (int i = 0; i < isz(b); i++){
		while (j < isz(a) && a[j] < b[i]) c.push_back(a[j++]);
		j++;
	}
	while (j < isz(a)) c.push_back(a[j++]);
	return c;
}
 
bool cmp(int x, int y){
	return __builtin_popcount(x) > __builtin_popcount(y);
}
 
vector <int> guess(int n){
	vector <int> ans(n);
	ans[0] = ask(1);
	for (int i = 0; (1<<i) < n; i++){
		vector <int> a(0), b(0);
		for (int j = 1; j < n; j++)
			if ((j>>i)&1) b.push_back(j+1);
			
		a = b;
		a.push_back(1);
		
		vector <int> c = comp(get_pairwise_xor(a), get_pairwise_xor(b));
		
		for (int j = 1; j < isz(c); j += 2) cnt[i][c[j]^ans[0]]++;
	}
	
	vector <int> ord(0);
	for (int i = 1; i < n; i++) ord.push_back(i);
	//sort(ord.begin(), ord.end(), cmp);
	
	for (int t = 0; t < isz(ord); t++){
		int i = ord[t];
		for (int j = 0; (1<<j) < n; j++)
			if ((i>>j)&1){
				for (pii P : cnt[j]){
					if (P.se == 0) continue;
					bool ok = 1;
					for (int k = j+1; (1<<k) < n; k++)
						if (((i>>k)&1) && cnt[k][P.fi] == 0){
							ok = 0;
							break;
						}
					if (ok){
						ans[i] = P.fi;
						for (int k = 0; (1<<k) < n; k++)
							if ((i>>k)&1){
								cnt[k][P.fi]--;
							}
						break;
					}
				}
				break;
			}
	}
	
	return ans;
}

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