public static void main ( String [ ] args ) throws IOException {
  BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  char [ ] x = br . readLine ( ) . toCharArray ( ) ;
  int n = x . length ;
  pow_2 = new long [ n + 1 ] ;
  pow_2 [ 0 ] = 1 ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) {
    pow_2 [ i ] = ( 2 * pow_2 [ i - 1 ] ) % mod ;
  }
  long ans = find ( x , n , 0 ) ;
  System . out . println ( ans ) ;
}

public static void main ( String [ ] args ) throws IOException { BufferedReader br = new BufferedReader ( new InputStreamReader ( System . in ) ) ; char [ ] x = br . readLine ( ) . toCharArray ( ) ; int n = x . length ; pow_2 = new long [ n + 1 ] ; pow_2 [ 0 ] = 1 ; for ( int i = 1 ; i < n ; i ++ ) { pow_2 [ i ] = ( 2 * pow_2 [ i - 1 ] ) % mod ; } long ans = find ( x , n , 0 ) ; System . out . println ( ans ) ; }
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