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CONFIGURE
YOUR ROUND
Pick your stack and how brutal you want it.
MODE
FIX BUGS
patch broken code
TRACE OUTPUT
predict the printed output
LANGUAGE
Pick one or more
JS
Python
TS
C++
C#
Ruby
DIFFICULTY
EASY
NORMAL
HARD
HARDCORE
⚡ 1 MISTAKE = OVER
ROUND LENGTH
30s
60s
120s
∞ Practice
CHALLENGE CAP
Endless
5
10
20
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