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2019年12月7日

Codeforces Round #604 (Div. 2) C. Beautiful Regional Contest

摘要：链接： https://codeforces.com/contest/1265/problem/C 题意： So the Beautiful Regional Contest (BeRC) has come to an end! n students took part in the contest 阅读全文

posted @ 2019-12-07 00:04 YDDDD 阅读(238) 评论(0) 推荐(0) 编辑

Codeforces Round #604 (Div. 2) B. Beautiful Numbers

摘要：链接： https://codeforces.com/contest/1265/problem/B 题意： You are given a permutation p=[p1,p2,…,pn] of integers from 1 to n. Let's call the number m (1≤m 阅读全文

posted @ 2019-12-07 00:02 YDDDD 阅读(342) 评论(0) 推荐(0) 编辑

Codeforces Round #604 (Div. 2) A. Beautiful String

摘要：链接： https://codeforces.com/contest/1265/problem/A 题意： A string is called beautiful if no two consecutive characters are equal. For example, "ababcb", 阅读全文

posted @ 2019-12-07 00:00 YDDDD 阅读(315) 评论(0) 推荐(0) 编辑

2019年12月6日

SPOJ - BALNUM - Balanced Numbers（数位DP）

摘要：链接： https://vjudge.net/problem/SPOJ BALNUM 题意： Balanced numbers have been used by mathematicians for centuries. A positive integer is considered a bal 阅读全文

posted @ 2019-12-06 23:56 YDDDD 阅读(114) 评论(0) 推荐(0) 编辑

HDU - 4507 - 吉哥系列故事——恨7不成妻（数位DP，数学）

摘要：链接： https://vjudge.net/problem/HDU 4507 题意：单身! 依然单身！吉哥依然单身！ DS级码农吉哥依然单身！所以，他生平最恨情人节，不管是214还是77，他都讨厌！吉哥观察了214和77这两个数，发现： 2+1+4=7 7+7=7 2 77=7 11 最终阅读全文

posted @ 2019-12-06 23:54 YDDDD 阅读(132) 评论(0) 推荐(0) 编辑

HDU - 4734 - F(x) （数位DP）

摘要：链接： https://vjudge.net/problem/HDU 4734 题意： For a decimal number x with n digits (A nA n 1A n 2 ... A 2A 1), we define its weight as F(x) = A n 2 n 1 阅读全文

posted @ 2019-12-06 23:42 YDDDD 阅读(103) 评论(0) 推荐(0) 编辑

HDU - 3652 - B-number（数位DP）

摘要：链接： https://vjudge.net/problem/HDU 3652 题意： A wqb number, or B number for short, is a non negative integer whose decimal form contains the sub string 阅读全文

posted @ 2019-12-06 23:39 YDDDD 阅读(108) 评论(0) 推荐(0) 编辑

HDU - 3709 - Balanced Number（数位DP)

摘要：链接： https://vjudge.net/problem/HDU 3709 题意： A balanced number is a non negative integer that can be balanced if a pivot is placed at some digit. More 阅读全文

posted @ 2019-12-06 23:36 YDDDD 阅读(95) 评论(0) 推荐(0) 编辑

POJ - 3252 - Round Numbers(数位DP）

摘要：链接： https://vjudge.net/problem/POJ 3252 题意： The cows, as you know, have no fingers or thumbs and thus are unable to play Scissors, Paper, Stone' (also 阅读全文

posted @ 2019-12-06 23:32 YDDDD 阅读(126) 评论(0) 推荐(0) 编辑

2019年12月5日

HDU - 3555 - Bomb(数位DP）

摘要：链接： https://vjudge.net/problem/HDU 3555 题意： The counter terrorists found a time bomb in the dust. But this time the terrorists improve on the time bom 阅读全文

posted @ 2019-12-05 23:32 YDDDD 阅读(92) 评论(0) 推荐(0) 编辑

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