题目描述
There is a sequence whose $n^{\text{th}}$ term is
$T_n=n^2-(n-1)^2$
Evaluate the series
$S_n=T_1+T_2+T_3+\cdots+T_n$
Find $S_n\:\text{mod}\:(10^9+7)$.
Example
$n=3$
The series is $1^2-0^2+2^2-1^2+3^2-2^2=1+3+5=9$.
Function Description
Complete the summingSeries function in the editor below.
summingSeries has the following parameter(s):
int n: the inclusive limit of the range to sum
Returns
int: the sum of the sequence, modulo $(10^9+7)$
Input Format
The first line of input contains $\boldsymbol{\boldsymbol{t}}$, the number of test cases.
Each test case consists of one line containing a single integer $n$.
Constraints
$1\leq t\leq10$
$1\leq n\leq10^{16}$
Sample Input 0
2
2
1
Sample Output 0
4
1
Explanation 0
Case 1: We have $4=1+3$
Case 2: We have $1=1$
输入格式
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输出格式
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