Problem:
Score : 200 points

Problem Statement

Find the sum of the integers between 1 and N (inclusive), whose sum of digits written in base 10 is between A and B (inclusive).

Constraints

1 \leq N \leq 10^4

1 \leq A \leq B \leq 36

All input values are integers.

Input

Input is given from Standard Input in the following format:

N A B

Output

Print the sum of the integers between 1 and N (inclusive), whose sum of digits written in base 10 is between A and B (inclusive).

Sample Input 1

20 2 5

Sample Output 1

84

Among the integers not greater than 20, the ones whose sums of digits are between 2 and 5, are: 2,3,4,5,11,12,13,14 and 20. We should print the sum of these, 84.

Sample Input 2

10 1 2

Sample Output 2

13

Sample Input 3

100 4 16

Sample Output 3

4554

Solution in Pascal (FPC 2.6.2) (judge verdict: Runtime Error)

var a:array[1..100]of word;
    n,x,i,j:longint;
 begin
  readln(n);
  for i:=1 to n do 
  begin
   readln(x);
   for j:=0 to (x div 7) do
    if((x-7*j)mod 3)=0 then 
     a[i]:=1;
  end;
  for i:=1 to n do 
   if a[i]=1 then 
        writeln('YES')
   else writeln('NO');
 end.