fast io
#include <bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
return 0;
}fast io
#include <bits/stdc++.h>
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
return 0;
}fast io
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL);Copyright © 2021 Codeinu
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