Asked at Citadel Securities
Theory: Quant Python That Survives ReviewRead the problem, hints and solution here. The editor needs a bigger screen: open this page on a laptop to write and run your code.
xxxx xxxxxxxxxx xxxx xx xxxxxxxx xxxxxx xxxx, xxx xxx xxxxxxxx xxxxxxxxx xxxx xx xxxxxxxxxxxx xxxxxx xxxxx xx: xxxxxxxx xxx xxxxx xx xxxxxxxxxx, xxx xx xx xxxxxxxx. xxx xxxxxxxxx xxxx xx xxx xxxxx xxxxxxxxxx xxxxxx xxxx xxxxx, xxxxxxx xx xx xxx xxxx xxxxxxxxx xxxxxx xxxxx "xxxx xxxxxxxx xxx xx ( x ) xxxxx": xxx xxxxxxxx xxxxxxx xx ( x ) xxxxxxxx xxxxxx xxxxx.
xxxxxxxxx xxxxxxxx_xxxxxxx(x, xxxxx, xxxx).
x: xxx xxxx xxxxxxxx xxxxxx xxxxxxxxx xxx xxxxxxx xx xxxxx xxxx.xxxxx: xxx xxxx xxxxx xxxxx xxxxxxxxxxx xx xxx.xxxx: xxx xxx xxxx.xxxxxxxx ( xxxxx[xxx(x_x, xxxx, x_x)xxxxx] ) xxx x.x.x. xxxxxxxx xxxxxxx xx xxxxxxxxxx, xxx xxxxxx xxx xxxxxxxx xxxxxxx xx x xxxxxxxx.
xx xxxx xxxx xxxxxx xx xxxxxxxxxxxx, xxxxxx xxxx xxxxx xxxxxxxxx: xxxxxx
xxx xxxxxxxxx xxxx xxxxx.xxxxxx.xxxxxxx_xxx(xxxx), xxxx xxx xxxxx xxxxxx
xx xxx xxxx xx xxx.xxxxxxxx_xxxxxx((xxxxx, x)), xxxx xxx xxxxxxx xx xxxx
xxx, xxx xxxxxxx.
xxxxxxxx_xxxxxxx(x, xxxxxx, x)
# -x.xxxx
xxxxxxxx_xxxxxxx(xx, xxxxxx, xx)
# x.xxxx
xxx xxxxxxx xx xxx xxxx xx xxxx xxx xxxx, xx xxx xxxxx xxxxxxx xxxxxxxxx x xxxx xx xxxx. x xxxxxx xxxx xxxx ( x = xxx ), xxxxx xxx xxxxx ( xxxx{xxx x} ) xxxx xx xxxxx xxxx x.xx xxx xxx xxxxxxxxxx xxxxx xxx xxxx xxx xxxxx xx.
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