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摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805491530579968 Suppose a bank has K windows open for service. There is a yellow line in 阅读全文

摘要： https://pintia.cn/problem-sets/994805342720868352/problems/994805439202443264 Shopping in Mars is quite a different experience. The Mars people pay by 阅读全文