package main

import . "fmt"

var b1, b2 []byte
var m = map[string]bool{}

func main() {
	var s string
	Scan(&s)
	b1 = []byte(s)
	b2 = make([]byte, len(b1))
	walk(0, 0, len(b1)-1)
	Println(len(m))
}

func walk(i, l, r int) {
	if i >= len(b2) {
		m[string(b2)] = true
		return
	}
	b2[i] = b1[l]
	walk(i+1,l+1,r)
	b2[i] = b1[r]
	walk(i+1,l,r-1)
}