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Competitions

Week 6: December 14 - 20. Char arrays 1

Indexes of spaces

Find the indexes of the first and the last spaces in the given string, if the first character has index "0"..

Input

One line of text, consisting only of Latin letters, punctuation marks and spaces.

Output

Print the indexes of the first and the last spaces. If there are no spaces in the line, print -1.

Time limit 1 second
Memory limit 128 MiB
Input example #1
I am programming on Python.
Output example #1
1 19
Input example #2
abrakadabra
Output example #2
-1
Author Matviychuk Sergiy Volodymyrovych
Source "ABC programming"