029. Goooooooooal!
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

Your favorite soccer announcer will always say "gooooal" for a very long time after a team scores. You have a "speech to text" tool that transcribed the announcer's words. Given his written down goal reaction, figure out exactly how many "o" letters are in it.

Input

The only line of input contains a single string $$$s$$$: the announcer's reaction to a team's goal.

Output

Output a single integer $$$n$$$: the number of "o" letters in the given string.

Example
Input
goooooooooal
Output
9