This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#include "chameleon.h"
#define debug(x) cerr << #x << " = " << x << ", ";
#define ll long long
#define pb push_back
using namespace std;
#define FAST_IO \
ios_base::sync_with_stdio(false); \
cin.tie(NULL); \
cout.tie(NULL);
void Solve(int N)
{
vector<vector<int>> v(2 * N + 1);
vector<int> graph(2 * N + 1, -1);
for (int i = 1; i <= 2 * N; i++)
{
for (int j = i + 1; j <= 2 * N && v[i].size() < 3; j++)
{
vector<int> p;
p.pb(i);
p.pb(j);
if (Query(p) == 1)
{
v[i].pb(j);
v[j].pb(i);
}
}
}
for (int i = 1; i <= 2 * N; i++)
{
for (int j = 0; j < 3 && graph[i] == -1; j++)
{
for (int k = j + 1; k < 3; k++)
{
vector<int> p;
p.pb(i);
p.pb(v[i][j]);
p.pb(v[i][k]);
if (Query(p) == 1)
{
graph[i] = v[i][3 - j - k];
break;
}
}
}
}
for (int i = 1; i <= 2 * N; i++)
{
for (int j = 0; j < 3; j++)
{
if (v[i][j] == graph[i] || i == graph[v[i][j]])
{
continue;
}
Answer(i, v[i][j]);
break;
}
}
}
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