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 PHP7 (7.0.15) (judge verdict: Wrong Answer)

<?php
$input = array_map('intval', explode(" ", trim(fgets(STDIN))));
$N = $input[0];
$A = $input[1];
$B = $input[2];

for ($i=1; $i < $N+1; $i++) {
    for ($j=0; $j < strlen($i); $j++) {
        $num += $i%10;
    }
    if (($A<=$num)and($B>=$num)) {
        $total += $i;
    }
}
print $total;