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E. Scheme To learn as soon as possible the latest news about their favourite fundamentally new operating system, BolgenOS community from Nizhni Tagil 阅读全文
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E :Partial Sum 每次取任意两个不同的前缀,取过之后不能再取,最多取M次 将前缀和排序,优先取最大,最小就行了 #include<bits/stdc++.h> using namespace std; #pragma comment(linker, "/STACK:102400000,1 阅读全文
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F. Leha and security system Bankopolis, the city you already know, finally got a new bank opened! Unfortunately, its security system is not yet workin 阅读全文
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E. Prairie Partition It can be shown that any positive integer x can be uniquely represented as x = 1 + 2 + 4 + ... + 2k - 1 + r, where k and r are in 阅读全文
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A seven segment display, or seven segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to 阅读全文