#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<set>
#include<vector>
#include<algorithm>
#include<set>
#include<stdio.h>
#include<vector>
#include<algorithm>
#include<set>
#include<string>
#include<map>
#include<stdlib.h>
#include<string.h>
#include<string>
#include<queue>
using namespace std;
int  A[201];
bool  B[201];
bool  C[101][201];
int main()
{
	int a;
	cin >> a;
	int l = 2;
	int f = 1;
	int g;
	for (int i = 1; i <= a; i++)
	{
		C[0][i] = i;
	}
	if (a % 2 == 1)
	{
		cout << 1 << " "<< (a + 1) / 2;
		cout.flush();
		for (int i = 1; i <= (a + 1) / 2; i++)
		{
			cin >> g;
			B[g] = 1;
		}
		int r = a - 1;
		while (l <= r)
		{
			cout << l <<" "<< r;
			cout.flush();
			for (int i = 1; i <= r - l+1; i++)
			{
				cin >> g;
				C[f][g] = 1;
			}
			f++;
			l++;
			r--;
		}
	}
	if (a % 2 == 0)
	{
		cout << 1 << " " << a / 2;
		cout.flush();
		for (int i = 1; i <= a / 2; i++)
		{
			cin >> B[i];
		}
		int r = a - 2;
		while (l <= r)
		{
			cout << l << " " << r;
			cout.flush();
			for (int i = 1; i <= r - l + 1; i++)
			{
				cin >> g;
				C[f][g] = 1;
			}
			f++;
			l++;
			r--;
		}
	}
	for (int i = 1; i <= f; i++)
	{
		for (int v = 1; v <= f - i; v++)
		{

		}
	}
}