/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
        String code = "20098";

        char zipCode;
        zipCode=code.charAt(0);

            switch (zipCode) {
            case '0': case '2': case '3':
                System.out.println(zipCode + " is on the East Coast.");
                break;
            case '4': case '5': case '6': 
                System.out.println(zipCode + " is in the Central Plains Area.");
                break;
            case '7':
                System.out.println(zipCode + " is in the South.");
                break;
            case '8': case '9':
                System.out.println(zipCode + " is in the West.");
                break;
            default:
                System.out.println(zipCode + " is an invalid ZIP Code.");
            }
    }
}