#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using ull = unsigned long long;
using db = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<db, db>;
using tiii = tuple<int, int, int>;
using str = string;
#define vt vector
#define pb push_back
#define eb emplace_back
#define ins insert
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
constexpr int MOD = 1e9 + 7;
constexpr int maxN = 300000;
constexpr int INFi = 2e9;
constexpr ll INF = 4e18;
void solve() {
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(NULL);
// freopen("input.txt", "r", stdin);
// freopen("output.txt", "w", stdout);
int t = 1;
// cin >> t;
while (t--) {
solve();
}
return 0;
}