package main

import (
	"flag"
	"fmt"
	"strings"
	"unicode/utf8"
)

var (
	first  string
	second string
)

func init() {
	flag.StringVar(&first, "first", "", "First string")
	flag.StringVar(&second, "second", "", "Second string")
}

func main() {
	flag.Parse()

	if len(first) != len(second) {
		fmt.Println("Not an annagram")
		return
	}

	for _, r := range first {
		runeIndex := strings.IndexRune(second, r)
		if runeIndex == -1 {
			fmt.Println("Not an annagram")
			return
		}
		second = second[:runeIndex] + second[runeIndex+utf8.RuneLen(r):]
	}

	fmt.Println("It is annagram")
}