package main

import (
    "bufio"
    "fmt"
    "io"
    "os"
    "strings"
)

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

func pangrams(s string) string {
    // Write your code here
    s = strings.ToLower(s)

    m := make(map[rune]struct{}, 26)
    for _, a := range s {
        if a >= 'a' && a <= 'z' {
            fmt.Println(a)
            m[a] = struct{}{}
        }
    }
    fmt.Println(len(m))
    if len(m) == 26 {
        return "pangram"
    } else {
        return "not pangram"
    }
}

func main() {
    reader := bufio.NewReaderSize(os.Stdin, 16 * 1024 * 1024)

    stdout, err := os.Create(os.Getenv("OUTPUT_PATH"))
    checkError(err)

    defer stdout.Close()

    writer := bufio.NewWriterSize(stdout, 16 * 1024 * 1024)

    s := readLine(reader)

    result := pangrams(s)

    fmt.Fprintf(writer, "%s\n", result)

    writer.Flush()
}

func readLine(reader *bufio.Reader) string {
    str, _, err := reader.ReadLine()
    if err == io.EOF {
        return ""
    }

    return strings.TrimRight(string(str), "\r\n")
}

func checkError(err error) {
    if err != nil {
        panic(err)
    }
}