03 2019 档案
摘要:解题过程 开场shl过B,C,然后lfw写J,J WA了以后shl写A,但是因为OJ上空间开小WA了,而不是MLE?,J加了特判过了。之后一直在检查A错哪了,直到qt发现问题改了空间,浪费许多时间,但是拿到A一血,shl和byf推出K,不会写组合数而抄了板子, 但是WA, shl想出E题拿到一血了,
阅读全文
摘要:It's said that Aladdin had to solve seven mysteries before getting the Magical Lamp which summons a powerful Genie. Here we are concerned about the fo
阅读全文
摘要:A.Regular bracket sequence A string is called bracket sequence if it does not contain any characters other than "(" and ")". A bracket sequence is cal
阅读全文
摘要:A : Be Positive 题目地址:https://codeforces.com/problemset/problem/1130/A 题解:让你求是否满足一个d使得数列长为n的a数组的每个数除以d以后,所得数列正数的数量大于ceil(n);(除以后四舍五入,0不是正数) 注意d为负数的情况 参
阅读全文