English
Zadanie Dzielniki (dzi)
<Submit a solution> [0/1]
Task statistics
Number of users: 90
Number of users with 1 points: 64
Average result: 0.7111
Number of users: 90
Number of users with 1 points: 64
Average result: 0.7111
Divisors
Memory limit: 256 MB
You are given a sequence of 
integers 
.
You should determine the number of such ordered pairs 
, that 
, 
and 
is a divisor of 
.
Input
The first line of input contains one integer 
(
).
The second line contains a sequence of 
integers 
(
).
Output
In the first and only line of output should contain one integer, denoting the number of pairs sought.
Example
For the input data:
5 2 4 5 2 6
the correct result is:
6
Explanation of the example:
There are 
pars with the specified properties: 
, 
, 
, 
, 
, 
.
Task author: Jakub Lacki.
<Submit a solution> [0/1]