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/* You have lost, my dear */
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#define mod 1000000007
#define fi first
#define se second
using namespace std;
int n;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
// shuffle(permutation.begin(), permutation.end(), rng);
cin>>;
cout<<;
return 0;
}