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Statement

 Goal

You must determine the minimum number of bracket-flipping operations needed to make a given expression valid. An expression has a valid bracketing when all the parentheses (), square brackets [], curly braces {} and angle brackets <> are correctly paired and nested.

You can flip a bracketing element in-place by replacing it with its counterpart, e.g. replace a ( with a ), or a > with a <. For example, flipping both parentheses around in the expression below would make it valid with a cost of 2:
<{[)abc(]}> → <{[(abc)]}>

(This is an arguably harder variant of community puzzle “Brackets, Enhanced Edition”. You may want to complete that one first.)
Input
Line 1: the number N of expressions
Next N lines: an expression
Output
N lines: the number F of flips needed to make the expression valid. If the expression cannot be made valid, output -1.
Constraints
N ≤ 100
expression length ≤ 10000
number of bracketing elements ≤ 25
The expression contains no whitespace.
Example
Input
2
<{[(abc(]}>
<{[(abc>}])
Output
1
-1
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