#include <bits/stdc++.h>
 
using namespace std;
 
#define sz(x) int(x.size())
#define all(x) begin(x),end(x)
#define forsn(i,s,n) for(int i=int(s);i<int(n);i++)
#define forn(i,n) for(int i=0;i<int(n);i++)
#define dforsn(i,s,n) for(int i=int(n)-1;i>=int(s);i--)
#define dforn(i,n) for(int i=int(n)-1;i>=0;i--)
#define dbg(x) cerr<<#x<<": "<<x<<endl
 
#define fst first
#define snd second
#define pb push_back
#define eb emplace_back
 
typedef pair<int,int> ii;
typedef vector<ii> vii;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<int> vi;
 
//const int MAXN = 2e5+5;
//const ll INF = 1e18;
const int MOD = 1e9+7;
 
template<class x> ostream & operator<<(ostream & out, vector<x> v){
    out<<"[ ";
    for(auto y : v) out<<y<<" ";
    out<<"]";
    return out;
}
 
template<class a, class b> ostream & operator<<(ostream & out, pair<a, b> p){
    return out<<"("<<p.fst<<", "<<p.snd<<")";
}

vi p,p2;

bool cmp(int x, int y){//x<y
    cout<<p[x]+1<<' '<<p[y]+1<<endl;
    int r; cin>>r;
    if(r==-1)exit(0);
    if(r==1){
        swap(p[x],p[y]);
        p2[p[x]]=x,p2[p[y]]=y;
        return false;
    }
    return true;
}

vi merge(const vi &a, const vi &b){
    int n=sz(a),m=sz(b);
    vi c(n+m);
    int i=0,j=0;
    forn(k,n+m){
        if(j>=m||(i<n&&cmp(a[i],b[j]))) c[k]=a[i++];
        else c[k]=b[j++];
    }
    return c;
}

void merge_sort(vi &v){
    int n=sz(v);
    if(n<=1) return;
    vi a(begin(v),begin(v)+n/2);
    vi b(begin(v)+n/2,end(v));
    merge_sort(a);
    merge_sort(b);
    v=merge(a,b);
}

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    int n;
    cin>>n;
    vi a(n); iota(all(a),0);
    p.resize(n); iota(all(p),0);
    p2.resize(n); iota(all(p2),0);
    merge_sort(a);
    forn(i,n) cmp(p2[i],p[a[i]]);
    cout<<"-1 -1"<<endl;
    
    return 0;
}