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A. Alex and a Rhombus 题目链接：http://codeforces.com/contest/1180/problem/A 题目： While playing with geometric figures Alex has accidentally invented a conc 阅读全文
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B. Email from Polycarp 题目链接：http://codeforces.com/contest/1185/problem/B 题目： Methodius received an email from his friend Polycarp. However, Polycarp's 阅读全文
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A. Ropewalkers 题目链接：http://codeforces.com/contest/1185/problem/A 题目： Polycarp decided to relax on his weekend and visited to the performance of famous 阅读全文
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A. Chunga-Changa 题目链接：http://codeforces.com/contest/1181/problem/A 题目 Soon after the Chunga-Changa island was discovered, it started to acquire some f 阅读全文
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B. Merge it！ 题目链接：http://codeforces.com/contest/1176/problem/B 题目 You are given an array a consisting of n integers a1,a2,…,anIn one operation you can 阅读全文