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 JavaScript (Node.js 12.16.1) (judge verdict: Accepted)

function main(input) {
  let args = input.split(/\s/);
  let result = 0;
  for (let i = 0;i <= args[0];i++) {
    let sum = 0;
    for (let j = 0;j < ((i + '').length);j++) {
      sum += ((i + '')[j]) * 1;
    }
    if (sum >= args[1] && sum <= args[2]) {
      result += i;
    }
  }
  console.log(result);
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));