package main

import . "fmt"
import . "sort"

func main() {
	var n,s string
	Scan(&n,&s)
	if len(s)%2!=0 {
		Println("No")
		return
	}
	Println("Yes")
	b:=[]byte(s)
	Slice(b,func(i,j int)bool {
		if i%2==j%2 {
			return i<j
		} else {
			return i%2<j%2
		}
	})
	s=string(b)
	Println(s[:len(s)/2],s[len(s)/2:])
}