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some confusion problem:Petya and Divisors beta round #85
Автор Tintin, 13 лет назад, По-английски

http://www.codeforces.com/contest/112/problem/D
if input is=> 18 4 why output is=> 2, if I'm not wrong it would be 3, because 6,9,18 aren't divisor of the 14,15,16,17.
and the last input=> 10000 3 output should be 23, because out of 25 divisor of 10000 ,there are only 1 and 2 common divisor between 10000 and 9998

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13 лет назад, # |
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I think it's the subscripts that got some of us confused, although nothing's wrong with it.
When reading the third line, i thought it was xi - yi instead of xi - yi
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