Submission #471785

#	Time	Username	Problem	Language	Result	Execution time	Memory
471785		nickmet2004	Xoractive (IZhO19_xoractive)	C++11	100 / 100	5 ms	456 KiB

Xoractive

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

vector<int> guess(int n){
    if(n <= 12){
        vector<int> h;
        for(int i = 1; i <= n; ++i){
            h.push_back(ask(i));
        }return h;
    }
    int a = ask(1);
    map<int , int> T;
     vector<int> ans;
    ans.resize(n);
    ans[0] = a;
    for(int i = 0; i < 7; ++i){
        vector<int> x;
        for(int k = 1; k < n; ++k){
            if(k>>i&1)x.emplace_back(k + 1);
        }
        vector<int> X = get_pairwise_xor(x);
        x.push_back(1);
        vector<int> Y = get_pairwise_xor(x);
        map<int , int> A;
        for(int x : X) A[x]--;
        for(int x : Y) A[x] ++;
        for(auto x : A){
            if(x.second && x.first != 0) T[x.first ^ a] += (1<<i);
        }
    }
    for(auto x : T) ans[x.second] = x.first;
    return ans;
}

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