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先放原题: 将正整数$1, 2, 3, \dots, 30$划分为$k$组,使得每组内任意两数之和不等于任何完全平方数。求$k$的最小值。(《培优新方法》八年级数学 §23 第3题) 嗯,对手搓暴力枚...
呃……我个人认为,读对算法或者程序的名字,是对其发明者最大的尊重。 Manacher 字符串回文算法 IPA: /ˈmɑːnɛkɛ:/; 其实这玩意俗称为马拉车算法,因为是线性的,很快啊( 业界似乎没...
这首歌出现于USAP 2021 Literature – Short Works – Poems & Songs板块。 第一次听就感受到冷战阴冷的氛围,以及在美苏间无处...
This section contains 3 passages in total. They’re from BBC Worklife, BBC News & BBC Sport...
This section contains 3 passages in total. One from Space News, the others from BBC News. Informatio...
This sections contain 2 passages in total. One from The New York Times and the other from Global Tim...