|시간 제한||메모리 제한||제출||정답||맞은 사람||정답 비율|
|5 초||512 MB||0||0||0||0.000%|
Champernown constant is an irrational number represented in decimal by “0.” followed by concatenation of all positive integers in the increasing order. The first few digits of this constant are: 0.123456789101112 .. .
Your task is to write a program that outputs the K digits of Chapnernown constant starting at the N-th place for given two natural numbers K and N.
The input has multiple lines. Each line has two positive integers N and K (N ≤ 109 , K ≤ 100) separated by a space.
The end of input is indicated by a line with two zeros. This line should not be processed.
For each line, output a line that contains the K digits.
4 5 6 7 0 0