Argument Parser I

Unlike every other problem here, there's no input file — the input is your script's own command-line flags, exactly what getopts is for.

Input

Your script is invoked with some combination of these flags, in any order, zero or more times each:

-n <count>   an integer
-v           a boolean flag (no value)
-o <name>    a string

Any flag may be omitted. -n and -o always take the very next argument as their value.

Output

Print exactly three lines, in this fixed order, regardless of what order the flags were given in:

n=<value or 0 if -n was never given>
v=<true if -v was given, otherwise false>
o=<value or none if -o was never given>

Constraints

• A flag may appear more than once — the last occurrence wins.
• Values never contain whitespace.
• At most 20 flags total.

Example

Invocation:

./solution.sh -n 5 -v -o report

Output:

n=5
v=true
o=report