#include <bits/stdc++.h>
#include "Anna.h"
using namespace std;
#define fs first
#define sc second
#define mp make_pair
#define FOR(i, j, k) for (int i = j, Z = k; i < Z; i++)
typedef pair<int, int> pii;
using ll = long long;
namespace {
}
int Declare() {
return 2000;
}
pair<vector<int>, vector<int>> Anna(ll A) {
return mp(vector<int>(A), vector<int>(A));
}
#include <bits/stdc++.h>
#include "Bruno.h"
using namespace std;
#define fs first
#define sc second
#define mp make_pair
#define FOR(i, j, k) for (int i = j, Z = k; i < Z; i++)
typedef pair<int, int> pii;
using ll = long long;
namespace {
}
long long Bruno(std::vector<int> u) {
return (ll) (u.size() / 2);
}
