Adding Least Common MultiplesProblem code: LCM |
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Given A and B, compute the sum of lcm(a, b) over all pairs of positive integers a and b such that:
(1) a<=A and b<=B.
(2) There is no integer n>1 such that n2 divides both a and b.
Give your answer modulo 230.
Input
The first line contains the number of test cases, t (about 200). Each of the next t lines contains two space-separated integers A and B (1<=A, B<=4000000).
Output
Print the answer to each test case on a separate line.
Example
Input: 4 2 4 3 3 6 5 8 3 Output: 24 28 233 178
| Date: | 2010-05-06 |
| Time limit: | 2s |
| Source limit: | 50000B |
| Languages: | All except: TCL |
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Program should read from standard input and write to standard output.
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