摘要:
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher. Danil works in a roote 阅读全文
posted @ 2018-05-07 20:48
Styx-ferryman
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摘要:
Mad scientist Mike has constructed a rooted tree, which consists of n vertices. Each vertex is a reservoir which can be either empty or filled with wa 阅读全文
posted @ 2018-05-07 14:05
Styx-ferryman
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