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D. Dividing Kingdom II 题目连接: http://www.codeforces.com/contest/687/problem/D Description Long time ago, there was a great kingdom and it was being rul 阅读全文
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E. The Values You Can Make 题目连接: http://www.codeforces.com/contest/688/problem/E Description Pari wants to buy an expensive chocolate from Arya. She h 阅读全文
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D. Remainders Game 题目连接: http://www.codeforces.com/contest/688/problem/D Description Today Pari and Arya are playing a game called Remainders. Pari ch 阅读全文
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C. NP Hard Problem 题目连接: http://www.codeforces.com/contest/688/problem/C Description Recently, Pari and Arya did some research about NP Hard problems 阅读全文
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B. Lovely Palindromes 题目连接: http://www.codeforces.com/contest/688/problem/B Description Pari has a friend who loves palindrome numbers. A palindrome n 阅读全文
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A. Opponents 题目连接: http://www.codeforces.com/contest/688/problem/A Description Arya has n opponents in the school. Each day he will fight with all opp 阅读全文