Author: | A. Baranov | Time limit: | 1 sec | |
Input file: | input.txt | Memory limit: | 256 Mb | |
Output file: | output.txt |
Your program must calculate total number of such pairs of integers (p,n) that p≥1, n>1 и A≤pn≤B.
Input file contains two integers A and B.
Output file must contain a single integer — number of pairs.
2≤A≤B<263
No. | Input file (input.txt ) |
Output file (output.txt ) |
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1 |
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2 |
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