P14902 [AtCoder] 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).
普及-
题目描述

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-----
20 2 5

-----Sample Output-----
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.

输入格式

见题面

输出格式

见题面

样例输入
20 2 5
样例输出
84