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Polycarp is an organizer of a Berland ICPC regional event. There are 𝑛n universities in Berland numbered from 1 to n. Polycarp knows all competitive     阅读全文
posted @ 2021-04-30 10:05
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There is a n×m grid. You are standing at cell (1,1) and your goal is to finish at cell (n,m). You can move to the neighboring cells to the right or do    阅读全文
posted @ 2021-04-30 09:16
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You have r red and b blue beans. You'd like to distribute them among several (maybe, one) packets in such a way that each packet: has at least one red    阅读全文
posted @ 2021-04-30 09:01
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