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17754492 Here is my solution for 670D1 - Magic Powder - 1
I dont know why it catch time limit exceeded on test 148. And then, I try g = l + (r-l+1) / 2, it is accepted? (g is midle in binary search), Im a newbie in python, and sorry for my bad in English
Have a set A. First there are n (n<=40000) number in A. If u and v are in A, LCM(u, v) and GCD(u, v) are in A, too. Give A and a number S, is S in A? Sorry, my English isn't good.
