题目描述
Let’s take a prime P = 200\,003. You are given $N integers A_1, A_2, \ldots, A_N.$ Find the sum of $((A_i \cdot A_j) \bmod P)$ over all $N \cdot (N-1) / 2$ unordered pairs of elements (i < j).
Please note that the sum isn't computed modulo P.
Constraints
- $2 \leq N \leq 200$\,000
- $0 \leq A_i < P = 200$\,003
- All values in input are integers.
Input
Input is given from Standard Input in the following format.
N
$A_1 A_2 \cdots A_N$
Output
Print one integer — the sum over $((A_i \cdot A_j) \bmod P)$.
Examples
Input
4
2019 0 2020 200002
Output
474287
Input
5
1 1 2 2 100000
Output
600013
输入格式
见题面
输出格式
见题面
样例输入
4
2019 0 2020 200002
样例输出
474287