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2017中国大学生程序设计竞赛 - 女生专场
链接：http://acm.hdu.edu.cn/showproblem.php?pid=6023 hdu 6023 Automatic Judge Problem Description Welcome to HDU to take part in the second CCPC girls’ competition! A new automatic judge system is used for this competition. During the five-hour contest tim杭电多校第六场-J-Ridiculous Netizens
Problem Description Mr. Bread has a tree T with n vertices, labeled by 1,2,…,n. Each vertex of the tree has a positive integer value wi.The value of a non-empty tree T is equal to w1×w2×⋯×wn. A subtree of T is a connected subgraph of T that2019牛客暑期多校训练营(第八场) Beauty Values
时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 524288K，其他语言1048576K 64bit IO Format: %lld 题目描述 Gromah and LZR have entered the second level. There is a sequence a1,a2,⋯ ,an on the wall.There is also a note board saying "the beauty value of a sequHDU5658：CA Loves Palindromic （回文树）
CA loves strings, especially loves the palindrome strings. One day he gets a string, he wants to know how many palindromic substrings in the substring S[l,r] . Attantion, each same palindromic substring can only be counted once. InputFirst line contains