CF D 7

#include <iostream>
#include <cmath>
#include <vector>
#include <queue>
#include <algorithm>
#include <string>
#include <stack>
#include <set>
#include <map>
#define pii pair <int,int>
#define vec vector
using namespace std;
using ll = long long;
using ld = long double;
using db = double;
void cv(vector <int> &v){
    for (auto x: v) {
            cout<<x<<' ';
    }
    cout<<"\n";
}

void cvl(vector <ll> &v){
    for (auto x: v) cout<<x<<' ';
    cout<<"\n";
}


void cvv(vector <vector <int> > &v){
    for (auto x: v) cv(x);
    cout<<"\n";
}

void cvb(vector <bool> v){
    for (bool x: v) cout<<x<<' ';
    cout<<"\n";
}

void cvs(vector <string>  v){
    for (auto a: v){
        cout<<a<<"\n";
    }
}

void cvp(vector <pii> a){
    for (auto p: a){
        cout<<p.first<<' '<<p.second<<"\n";
    }
    cout<<"\n";
}


bool sh=1;

int n, N;

// n = 1 - отдельно

void ask(int a, int b){
    cout<<"? "<< (a)<<' '<<(b)<<"\n";
    //cout.flush();
}

void slv(){
    vector <int> a,b;
    for (int i = 1; i <= pow(2,n); ++i){
        a.push_back(i);
    }

    while (a.size() >= 4){
        if (sh){
            cout<<"a\n";
            cv(a);
        }
        n = a.size();
        for (int i = 0; i + 3 < n; i+=4){
            if (sh){
                cout<<"i = "<<i<<"\n";
                cout<<"a\n";
                cv(a);
            }
            ask(a[i], a[i+2]);
            int r;
            cin>>r;
            int w1, w2, w;
            if (r == 0){
                w1 = a[i+1];
                w2 = a[i + 3];
            }
            else if (r == 1){
                w1 = a[i];
                w2 = a[i + 3];
            }
            else if (r == 2){
                w1 = a[i + 1];
                w2 = a[i + 2];
            }
            w = w1;
            ask(w1, w2);
            cin>>r;
            if (r == 2){
                w = w2;
            }
            b.push_back(w);
            a = b;
            b.clear();
            if (sh){

            }
        }
    }
    ask(a[0], a[1]);
    int r; cin>>r;
    if (r == 1){
        cout<<a[0]<<"\n";
    }
    else{
        cout<<a[1]<<"\n";
    }
}

int main()
{
    /*ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);*/
    int t=1;
    if (!sh) cin>>t;
    for (int go = 0; go < t; ++go){
        cin>>n;
        slv();
    }
}
/*
1
3
? 1 3
0
? 1 4
1
? 5 7
0
? 5 8
2


? 1 0
*/