```go
package main

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

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Scan()
	s := scanner.Text()
	n := len(s)
	k := 0
	for _, c := range s {
		if c == 'a' {
			k++
		}
	}
	t := ""
	for i := 0; i < k; i++ {
		t += "a"
	}
	for i := 0; i < n-k; i++ {
		t += "b"
	}
	curr := []byte(t)
	ans := make([]int, n)
	orig := []byte(s)
	for ii := n; ii >= 1; ii-- {
		i := ii - 1
		p1 := make([]byte, n)
		for j := 0; j < ii; j++ {
			p1[j] = curr[ii-1-j]
		}
		for j := ii; j < n; j++ {
			p1[j] = curr[j]
		}
		can0 := curr[i] == orig[i]
		can1 := curr[0] == orig[i]
		chosen := 0
		if can0 {
			chosen = 0
		} else if can1 {
			chosen = 1
		} else {
			fmt.Println("impossible")
			return
		}
		ans[ii-1] = chosen
		if chosen == 1 {
			copy(curr, p1)
		}
	}
	for j := 0; j < n; j++ {
		if j > 0 {
			fmt.Print(" ")
		}
		fmt.Print(ans[j])
	}
	fmt.Println()
}
```