问题 6119 --Counting Ones (30)
6119: Counting Ones (30)时间限制: 1 Sec 内存限制: 32 MB
提交: 4 解决: 4
The task is simple: given any positive integer N, you are supposed to count the total number of 1's in the decimal form of the integers from 1 to N. For example, given N being 12, there are five 1's in 1, 10, 11, and 12.
Each input file contains one test case which gives the positive N (<=230).
For each test case, print the number of 1's in one line.