C. Morco
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
.-.. .. ...

You're given an array of integers of length $$$n$$$, Find the answer.

Input

In the first line of input, You'll be given $$$n(1 \le n \le 10^5)$$$.

In the second line of input, You'll be given an array $$$a(1 \le a_{i} \le 10^9)$$$.

Output

Print the answer.

Example
Input
3
1 2 3
Output
3