#include<bits/stdc++.h>
#include "interactive.h"
using namespace std;
int base;
vector<int> getarr(vector<int> pos){
vector<int> s;
if(pos.empty()) return s;
vector<int> s1 = get_pairwise_xor(pos);
pos.push_back(1);
vector<int> s2 = get_pairwise_xor(pos);
map<int,int> st;
for(auto i : s2) st[i]++;
for(auto i : s1) st[i]--;
for(auto i : st){
if(i.first!=0 && i.second) s.push_back(i.first^base);
}
return s;
}
map<int,int> mp;
vector<int> guess(int n){
base = ask(1);
for(int i=0;i<7;i++){
vector<int> pos;
for(int k=2;k<=n;k++){
if(k&(1<<i)) pos.push_back(k);
}
vector<int> val = getarr(pos);
for(auto g : val) mp[g]+=(1<<i);
}
vector<int> arr(n);
for(auto i : mp){
arr[i.second-1] = i.first;
}
arr[0] = base;
return arr;
}
