package main

import "fmt"

func numberToWords(n int) string {
	if n < 0 || n >= 1000 {
		return "ERR"
	}

	ones := []string{"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"}
	teens := []string{"ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
		"sixteen", "seventeen", "eighteen", "nineteen"}
	tens := []string{"", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"}

	words := []string{}

	// 百位
	if n >= 100 {
		words = append(words, ones[n/100]+" hundred")
		n %= 100
		if n != 0 {
			words = append(words, "and")
		}
	}

	// 十位和个位
	if n >= 20 {
		if n%10 != 0 {
			words = append(words, tens[n/10]+"-"+ones[n%10])
		} else {
			words = append(words, tens[n/10])
		}
	} else if n >= 10 {
		words = append(words, teens[n-10])
	} else if n > 0 {
		words = append(words, ones[n])
	} else if len(words) == 0 { // n == 0
		words = append(words, "zero")
	}

	return joinWords(words)
}

func joinWords(words []string) string {
	res := ""
	for i, w := range words {
		if i > 0 {
			res += " "
		}
		res += w
	}
	return res
}

func main() {
	var n int
	fmt.Scan(&n)
	fmt.Println(numberToWords(n))
}