#!/bin/bash



read input

i=1
b=0
C=0
while (( i <= ${#input} ))
do
  ((C=C<<1))
  char=$(expr substr "$input" $i 1)
  case "$char" in
  1)
    (( C |= 1 ))
    (( b += 1 ))
  ;;
  0)
    (( b += 1 ))
  ;;
  esac

  if [ $b -eq 8 ] ; then
    printf \\$(printf '%03o' $C)
    C=0
    b=0 ;
  fi

  (( i += 1 ))
done

echo