Time limit: 1.00 s Memory limit: 512 MB
Given an array of
Input
The first input line has an integer
The next line has
Output
Print one integer: the required number of subarrays.
Constraints
$1 \le n \le 2 \cdot 10^5$ $-10^9 \le a_i \le 10^9$
Example
Input:
5
3 1 2 7 4
Output:
1