import java.util.Scanner;
class Dayx1
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("请输入班上的人数:");
int number = sc.nextInt();
int y=number%6;
int z=number/6;
if(y==0)
{
System.out.println("需要"+z+"个宿舍");
}
else{
System.out.println("需要"+(z+1)+"个宿舍");
}
}
}