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 Kotlin (1.0.0) (judge verdict: Accepted)

fun main (args: Array<String>) {
	val (num1, num2, num3) = readLine()!!.split(" ").map(String::toInt)
	
	var num : Int
	var calc : Int
	var result : Int = 0
	var total : Int = 0
	
	for (i in 1..num1) {
		num = i
		
		while (num > 0) {
			calc = num % 10
			result += calc
			num = num / 10
			
		}
		
		if (result >= num2 && result <= num3) {
			total += i
			
		}
		result = 0
		
	}
	
	println("${total}")
	
}