Codeforces Round 818 (Div. 2) |
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Finished |
Madoka is a very strange girl, and therefore she suddenly wondered how many pairs of integers $$$(a, b)$$$ exist, where $$$1 \leq a, b \leq n$$$, for which $$$\frac{\operatorname{lcm}(a, b)}{\operatorname{gcd}(a, b)} \leq 3$$$.
In this problem, $$$\operatorname{gcd}(a, b)$$$ denotes the greatest common divisor of the numbers $$$a$$$ and $$$b$$$, and $$$\operatorname{lcm}(a, b)$$$ denotes the smallest common multiple of the numbers $$$a$$$ and $$$b$$$.
The input consists of multiple test cases. The first line contains a single integer $$$t$$$ ($$$1 \le t \le 10^4$$$) — the number of test cases. Description of the test cases follows.
The first and the only line of each test case contains the integer $$$n$$$ ($$$1 \le n \le 10^8$$$).
For each test case output a single integer — the number of pairs of integers satisfying the condition.
612345100000000
1 4 7 10 11 266666666
For $$$n = 1$$$ there is exactly one pair of numbers — $$$(1, 1)$$$ and it fits.
For $$$n = 2$$$, there are only $$$4$$$ pairs — $$$(1, 1)$$$, $$$(1, 2)$$$, $$$(2, 1)$$$, $$$(2, 2)$$$ and they all fit.
For $$$n = 3$$$, all $$$9$$$ pair are suitable, except $$$(2, 3)$$$ and $$$(3, 2)$$$, since their $$$\operatorname{lcm}$$$ is $$$6$$$, and $$$\operatorname{gcd}$$$ is $$$1$$$, which doesn't fit the condition.
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