public static void main ( String [ ] $ ) {
  Scanner sc = new Scanner ( in ) ;
  long A = sc . nextLong ( ) - 1 ;
  long B = sc . nextLong ( ) ;
  int [ ] a = new int [ 19 ] ;
  int [ ] b = new int [ 19 ] ;
  for ( int i = 0 ;
  i < 19 ;
  i ++ ) {
    a [ 18 - i ] = ( int ) ( A % 10 ) ;
    b [ 18 - i ] = ( int ) ( B % 10 ) ;
    A /= 10 ;
    B /= 10 ;
  }
  out . println ( c ( b ) - c ( a ) ) ;
}

public static void main ( String [ ] $ ) { Scanner sc = new Scanner ( in ) ; long A = sc . nextLong ( ) - 1 ; long B = sc . nextLong ( ) ; int [ ] a = new int [ 19 ] ; int [ ] b = new int [ 19 ] ; for ( int i = 0 ; i < 19 ; i ++ ) { a [ 18 - i ] = ( int ) ( A % 10 ) ; b [ 18 - i ] = ( int ) ( B % 10 ) ; A /= 10 ; B /= 10 ; } out . println ( c ( b ) - c ( a ) ) ; }
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