package main

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

func main() {
	var s string
	Scan(&s)
	n:=new(Int)
	Sscanf(s,"%X",n)
	s=n.Text(8)
	m:=make([]int,10)
	for i:=range m {
		m[i]=st.Count(s,Sprint(i))
	}
	max:=Max(m)
	s=""
	for i,v:=range m {
		if v==max {
			s+=" "+Sprint(i)
		}
	}
	Println(s[1:])
}