hdu 5288 - OO’s Sequence 数学

OO’s Sequence

Problem Description
OO has got a array A of size n ,defined a function f(l,r) represent the number of i (l<=i<=r) , that there’s no j(l<=j<=r,j<>i) satisfy ai mod aj=0,now OO want to know
∑i=1n∑j=inf(i,j) mod （109+7）.

Input
There are multiple test cases. Please process till EOF.
In each test case:
First line: an integer n(n<=105) indicating the size of array
Second line:contain n numbers ai(0<ai≤10000

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