package main

import . "fmt"
import . "slices"
import . "math/big"

func main() {
	var s string
	Scan(&s)
	var x Int
	var t string
	b:=[]byte(s)
	Reverse(b)
	Sscan(string(b),&x,&t)
	Println(t+s[len(t):])
}