Pangrams

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    /*
     * Complete the 'pangrams' function below.
     *
     * The function is expected to return a STRING.
     * The function accepts STRING s as parameter.
     */

    public static String pangrams(String s) {
    // Write your code here
    
     String s2=s.toLowerCase();
     
     
     int count=0;
     int flag=0;
      
      for(int i=97; i<123; i++)
      {
         char ch = (char)i;
         
        
         
        for(int j=0; j<s.length(); j++)
         {
              count=0;
             if(ch ==s2.charAt(j))
             {
                 count+=1;
                 break;
             }
         }
         
         if(count==0)
         {
             flag=1;
             break;
         }
        
      }
       
       if(flag==1)
       {
           return "not pangram";
       }
       else
       {
           return "pangram";
       }
    }

}

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        String s = bufferedReader.readLine();

        String result = Result.pangrams(s);

        bufferedWriter.write(result);
        bufferedWriter.newLine();

        bufferedReader.close();
        bufferedWriter.close();
    }
}