using System;
public class Program
{
public static void Main()
Console.WriteLine("Hello World");
int n = int.Parse(Console.ReadLine());
if (n < 0)
Console.WriteLine("Number too small");
Environment.Exit(0);
}
else if (n > 32767)
Console.WriteLine("Number too large");
else
for (int f = n + 1; ; f++)
int c = 0;
for (int j = 1; j <= f; j++)
if (f % j == 0)
c++;
}if
(c == 2)
Console.WriteLine(f);
Console.ReadLine();
//Environment.Exit(0);
break;}