package main

import (
	"bufio"
	"fmt"
	"os"
)

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

func reverse(s string) string {
	buf := []rune(s)
	for i, j := 0, len(buf)-1; i < j; i, j = i+1, j-1 {
		buf[i], buf[j] = buf[j], buf[i]
	}
	return string(buf)
}

var sc = bufio.NewScanner(os.Stdin)

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