Submission #521926

#	Time	Username	Problem	Language	Result	Execution time	Memory
521926		dostigator	Xoractive (IZhO19_xoractive)	C++17	100 / 100	6 ms	384 KiB

Xoractive

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

vector<int> guess(int n) {
	vector <int> ans(n);
	int base=ask(1);
	ans[0]=base;
	map<int,int>res;
	for(int i=0; i<7; ++i){
        vector<int>v;
        int bad=1;
        for(int x=2; x<=n; ++x) if(x&(1<<i)) {v.push_back(x);bad=0;}
        if(bad) continue;
        vector<int>get=get_pairwise_xor(v);
        v.push_back(1);
        vector<int>GET=get_pairwise_xor(v);
        map<int,int>mp;
        for(int x:get) mp[x]++;
        for(int x:GET){
            mp[x]--;
            if(mp[x]==-1 && x!=0) res[x^base]|=(1<<i);
        }
	}
	for(auto [x,y]:res){
        ans[y-1]=x;
	}
	return ans;
}

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