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SPOJ-STC02 - Antisymmetry(双hash,回文典型做法)
题目链接 STC02 - Antisymmetry no tags Byteasar studies certain strings of zeroes and ones. Let S be such a string. By Sr we will denote the reversed (i.e., "read backwards") string S,原创 2017-01-24 20:28:58 · 512 阅读 · 0 评论 -
codeforces 580 E. Kefa and Watch(hash+线段树)
E. Kefa and Watch time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output One day Kefa the parrot was walking dow原创 2017-03-10 00:00:23 · 438 阅读 · 0 评论