Chiaki Sequence Revisited

TimeLimit:1000MS  MemoryLimit:32768KB
64-bit integer IO format:%I64d
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Problem Description
Chiaki is interested in an infinite sequence $a_1, a_2, a_3, ...$, which is defined as follows:
$$a_n=\begin{cases}1 & n = 1,2 \\ a_{n - a_{n-1}} + a_{n-1 - a_{n-2}} & n \ge 3\end{cases}$$
Chiaki would like to know the sum of the first $n$ terms of the sequence, i.e. $\sum\limits_{i=1}^{n}a_i$. As this number may be very large, Chiaki is only interested in its remainder modulo ($10^9 + 7$).
Input
There are multiple test cases. The first line of input contains an integer $T$ ($1 \le T \le 10^5$), indicating the number of test cases. For each test case:
The first line contains an integer $n$ ($1 \le n \le 10^{18}$).
Output
For each test case, output an integer denoting the answer.
SampleInput
10
1
2
3
4
5
6
7
8
9
10
SampleOutput
1
2
4
6
9
13
17
21
26
32
Submit
题目统计信息详细
总AC数3
通过人数1
尝试人数1
总提交量3
AC率33.33%
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