package main

import (
	"bufio"
	"fmt"
	"os"
	"unicode/utf8"
)

func main() {
	s := next()
	fmt.Println(reverse(s))
}

func reverse(s string) string {
	result := make([]rune, utf8.RuneCountInString(s))
	i := len(result) - 1
	for _, c := range s {
		result[i] = c
		i--
	}
	return string(result)
}

var sc = bufio.NewScanner(os.Stdin)

func next() string {
	sc.Split(bufio.ScanWords)
	sc.Scan()
	return sc.Text()
}