3. Count BSTs #
Created Saturday 18 July 2020
// main
#include <cmath>
#include <cstdio>
#include <iostream>
#include <algorithm>
using namespace std;
#include "solution.h"
int main()
{
int n ;
cin>>n;
cout<<countBST(n);
return 0;
}
//your
int countBST( int n)
{
/* Don't write main().
* Don't read input, it is passed as function argument.
* Return output and don't print it.
* Taking input and printing output is handled automatically.
*/
}