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You are given two strings s and t, both consisting only of lowercase Latin letters.The substring s[l..r]is the string which is obtained by taking char 阅读全文
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Natasha is planning an expedition to Mars for n people. One of the important tasks is to provide food for each participant. The warehouse has m daily 阅读全文
摘要:
codeforces 910c 转自两位大佬:http://www.cnblogs.com/wkfvawl/p/9387634.html https://i.cnblogs.com/EditPosts.aspx?opt=1 You are given an array a consisting of 阅读全文