南方周末：你在比赛期间，会关注其他选手的表现吗？
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Kosmos 482, which launched in 1972 on a mission to Venus, never made it out of Earth's orbit and instead broke into four pieces that have been circling the planet for more than five decades.，详情可参考51吃瓜
│ ~300 allowed syscalls
Here's the insertion algorithm in Python. Step through the code and watch each line execute on the tree: