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