public static void main ( String [ ] args ) throws IOException {
  Scanner input = new Scanner ( System . in ) ;
  long value [ ] = {
    6 , 2 , 5 , 5 , 4 , 5 , 6 , 3 , 7 , 6 };
    int a = input . nextInt ( ) ;
    int b = input . nextInt ( ) ;
    long ans = 0 ;
    for ( int i = a ;
    i <= b ;
    i ++ ) {
      String s = i + "" ;
      for ( int j = 0 ;
      j < s . length ( ) ;
      j ++ ) {
        ans += ( value [ s . charAt ( j ) - '0' ] ) ;
      }
    }
    System . out . println ( ans ) ;
  }
  
public static void main ( String [ ] args ) throws IOException { Scanner input = new Scanner ( System . in ) ; long value [ ] = { 6 , 2 , 5 , 5 , 4 , 5 , 6 , 3 , 7 , 6 } ; int a = input . nextInt ( ) ; int b = input . nextInt ( ) ; long ans = 0 ; for ( int i = a ; i <= b ; i ++ ) { String s = i + " " ; for ( int j = 0 ; j < s . length ( ) ; j ++ ) { ans += ( value [ s . charAt ( j ) - '0' ] ) ; } } System . out . println ( ans ) ; }
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