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xxx xxxxxx xxxx xxxx xxxxx'x xxxx xxxxxx xxx xx xxxxxxxxxx xx x xxxxxx xxxx. x xxxxxxxxxx xxx xxxx xxx xxx xxxxxx xxxxx xxxxxx xxxx xxxxxx xxxx xxxxx x xxxxxx. xxx xxxxx xxx xxxxx, xxx xxxxxxxx x xxxxxx xxxx xx xxxxx xxxxxxx xx xxx xxxx xx xxxxxx.
xxxxxxxxx xxxxxx_xxxxxx(x, x). x xxx x xxx xxxxx xx xxxxxxxx, xxxx xxxxxx
xx xxxxxxxxx xxxxx. xxxxxx xxx xxxxxx xx xxx xxxxxx xx xxxx xxxxx, xx x xxxxx:
xxxxxx xxxx xxx xx xxxxx, xxx xxx xxxx.
xxxxxx_xxxxxx([x, x, x], [x, x])
# x.x (xxx xxxxxxxx xxxxxx xxx x, x, x, x, x)
xxxxxx_xxxxxx([x, x], [x, x])
# x.x
xxxxxx_xxxxxx x,xxx xxxxx xx xxx xxxxx
xx (xx^x) xxxxxx xxxx. xxxxxxx, xx xxxxxxx xxx xxxxxxxxxxxxx, xxxxx
(x(x + x)) xx xxxx xxx xxxx xxx xxxx xxx xxxxxx xx xxxx. xxx xxx
(x(xxx xxx(x, x))) xxx xxxx.This problem is only available to subscribers.