using System;
public class Program
{
public static void Main()
int[] vector= new int[] {4,2,6,3,7,2};
int i;
int n;
int mayor;
n=Convert.ToInt32(Console.ReadLine());
for(i=0;i<=(vector.Length)-1;i++)
if (n<vector[i])
mayor=vector[i];
Console.WriteLine(mayor);
}
