import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    static int minimumNumber(int n, String password) {
        // Return the minimum number of characters to make the password strong
    } 

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        String password = in.next();
        int answer = minimumNumber(n, password);
        System.out.println(answer);
        in.close();
        char c;
       if (password.length() <= 6)
    {
      for (int i = 0; i <= password.length(); i++)
      {
        char x = password.charAt(i);
        if (Character.isUpperCase(x))
        {
            if (Character.isLowerCase(x))
            {
          if (Character.isDigit(x))
          {
             c = 1;
        }
      }
        }
      }
      if (c == 1)
        System.out.println("STRONG");
      else 
        System.out.println("NOT STRONG");
    }
    else
      System.out.println("HAVE AT LEAST 6 CHARACTERS");
    }

   
}