Subject to the effect
There are three integers $ A $, $ B $, $ C $, with the following $ N _ {(2)} $ $ N $ represents a binary (no leading $ 0 $).
Provided $ A _ {(2)} $, $ B _ {(2)} $, $ C _ {(2)} $ maximum length of $ L $ ($ L \ leqslant 30 $), you need to construct three positive integers $ X $, $ Y $, $ Z $, satisfying the following conditions:
(1) $ X _ {(2)} $, $ Y _ {(2)} $, $ Z _ {(2)} $ length does not exceed $ L $.
(2) $ A _ {(2)} $ and $ X _ {(2)} the same number of $ $ $ 1.
(3) $ B _ {(2)} $ and $ Y _ {(2)} the same number of $ $ $ 1.
(4) $ C _ {(2)} $ and $ Z _ {(2)} $ $ in the same number of $ 1.
（5） $X+Y=Z.$。
Give you $ A $, $ B $, $ C $, you need to find the minimum to meet the conditions of the $ Z $. If the condition of the Z $ $ does not exist, then the output $ $ -1.
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