Submission #949623

#	Time	Username	Problem	Language	Result	Execution time	Memory
949623		Pikachu	Xoractive (IZhO19_xoractive)	C++17	100 / 100	4 ms	600 KiB

Xoractive

#include <bits/stdc++.h>
#include "interactive.h"
#define bit(x, y) (((x) >> (y)) & 1)

using namespace std;

vector<int> guess(int n) 
{
    map<int,int> pos;
    vector<int> res(n);
    res[0] = ask(1);
    for (int b = 0; b < 7; b++) {
        vector<int> tmp;
        for (int i = 2; i <= n; i++) {
            if (bit(i, b)) tmp.push_back(i);
        }
        if (tmp.empty()) break;
        vector<int> mim = get_pairwise_xor(tmp);
        tmp.push_back(1);
        vector<int> mim1 = get_pairwise_xor(tmp);
        map<int,int> mp;
        for (int x : mim1) mp[x]++;
        for (int x : mim) mp[x]--;
        for (pair<int,int> p : mp) {
            if (p.first && p.second) pos[p.first ^ res[0]] |= (1 << b);
        }
    }
    for (pair<int,int> p : pos) {
        res[p.second - 1] = p.first;
    }
    return res;
}

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