#include <bits/stdc++.h>
#define int long long
#define foru(i,c,d) for(int i=(c);i<=(d);i++)
#define ford(i,c,d) for(int i=(c);i>=(d);i--)
#define fi first
#define se second
#define ii pair<int,int>
#define Dragon ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
using namespace std;

signed main()
{
    Dragon;
    return 0;
}