This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#ifndef EVAL
#include "grader.cpp"
#endif
#include "chameleon.h"
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pii pair<int, int>
#define pb push_back
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
using namespace std;
const int MAXN = 505;
// Query(p) | p is vector<int>
// Answer(a, b)
int n;
bool found[MAXN * 2];
void Solve(int N) {
	n = N;
	for (int i = 1; i <= n * 2; i++) {
		for (int j = 1; j <= n * 2; j++) {
			if (i != j && !found[i] && !found[j]) {
				vector <int> ask = {i, j};
				int val = Query(ask);
				if (val == 1) {
					found[i] = 1;
					found[j] = 1;
					Answer(i, j);
				}
			}
		}
	}
}
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