做题记录 - 随笔分类(第14页) - zltzlt

CodeForces 997C Sky Full of Stars

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/CF997C "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/997/C "CF 传送门") 考虑容斥，钦定 $i$ 行 $j$ 列放同一种颜色，阅读全文

posted @ 2023-07-09 22:04 zltzlt 阅读(75) 评论(0) 推荐(0)

洛谷 P6620 [省选联考 2020 A 卷] 组合数问题

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/P6620 "洛谷传送门") 记一下是怎么推的。 $$\sum\limits_{k = 0}^n f(k) \times x^k \times \binom{n}{k}$$ $$= \sum\limits_{p = 0 阅读全文

posted @ 2023-07-09 14:26 zltzlt 阅读(30) 评论(0) 推荐(0)

AtCoder Grand Contest 058 D Yet Another ABC String

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_agc058_d "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/agc058/tasks/agc058_d "AtCoder 传送门") Orz H6_6Q 阅读全文

posted @ 2023-07-08 10:55 zltzlt 阅读(32) 评论(0) 推荐(0)

CodeForces 1142E Pink Floyd

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/CF1142E "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1142/E "CF 传送门") 感觉很神奇啊，想了挺久的。如果没有粉色边是容易阅读全文

posted @ 2023-07-06 20:29 zltzlt 阅读(26) 评论(0) 推荐(0)

KEYENCE Programming Contest 2021 E Greedy Ant

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_keyence2021_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/keyence2021/tasks/keyence2021_e "AtCoder 阅读全文

posted @ 2023-07-06 16:18 zltzlt 阅读(25) 评论(0) 推荐(0)

洛谷 P7722 [Ynoi2007] tmpq

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/P7722 "洛谷传送门") 被踩爆了![](//图.tk/7)好神的题啊！转化一下题意，给出三个数组 $a, b, c$，每次可以单点修改 $a, b, c$，询问即求 $b_i = a_j = c_k, 1 \l 阅读全文

posted @ 2023-07-05 15:37 zltzlt 阅读(119) 评论(0) 推荐(0)

AtCoder Grand Contest 033 D Complexity

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_agc033_d "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/agc033/tasks/agc033_d "AtCoder 传送门") 这题感觉实在太 e 阅读全文

posted @ 2023-07-05 14:53 zltzlt 阅读(35) 评论(0) 推荐(0)

AtCoder Regular Contest 163 D Sum of SCC

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc163_d "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc163/tasks/arc163_d "AtCoder 传送门") 怎么连这种相对传统阅读全文

posted @ 2023-07-03 21:28 zltzlt 阅读(108) 评论(0) 推荐(0)

AtCoder Regular Contest 153 E Deque Minimization

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc153_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc153/tasks/arc153_e "AtCoder 传送门") 我们考虑给定 $X 阅读全文

posted @ 2023-07-03 21:05 zltzlt 阅读(34) 评论(0) 推荐(0)

CodeForces 1508D Swap Pass

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/CF1508D "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1508/D "CF 传送门") 先忽略掉所有 $a_i = i$ 的点。考虑我阅读全文

posted @ 2023-07-03 20:01 zltzlt 阅读(23) 评论(0) 推荐(0)

AtCoder Beginner Contest 308 G Minimum Xor Pair Query

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc308_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc308/tasks/abc308_g "AtCoder 传送门") 考虑没有删除操作怎阅读全文

posted @ 2023-07-03 08:47 zltzlt 阅读(47) 评论(0) 推荐(0)

AtCoder Regular Contest 163 C Harmonic Mean

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc163_c "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc163/tasks/arc163_c "AtCoder 传送门") 这题是不是想到裂项阅读全文

posted @ 2023-07-03 08:12 zltzlt 阅读(83) 评论(0) 推荐(0)

AtCoder Grand Contest 021 E Ball Eat Chameleons

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_agc021_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/agc021/tasks/agc021_e "AtCoder 传送门") 容易发现一个变色龙阅读全文

posted @ 2023-07-01 19:39 zltzlt 阅读(20) 评论(0) 推荐(0)

Japanese Student Championship 2021 F Max Matrix

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_jsc2021_f "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/jsc2021/tasks/jsc2021_f "AtCoder 传送门") 我们考虑动态阅读全文

posted @ 2023-06-30 23:15 zltzlt 阅读(101) 评论(0) 推荐(0)

CodeForces 1845C Strong Password

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/CF1845C "洛谷传送门") [CF 传送门](https://codeforces.com/problemset/problem/1845/C "CF 传送门") 我怎么这么多天没写题解了，快来水一篇。考虑对阅读全文

posted @ 2023-06-30 23:07 zltzlt 阅读(138) 评论(0) 推荐(0)

AtCoder Beginner Contest 296 Ex Unite

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc296_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc296/tasks/abc296_h "AtCoder 传送门") 不错的 dp。考阅读全文

posted @ 2023-06-28 20:39 zltzlt 阅读(49) 评论(0) 推荐(0)

AtCoder Beginner Contest 227 H Eat Them All

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc227_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc227/tasks/abc227_h "AtCoder 传送门") 好奇特的题。考虑阅读全文

posted @ 2023-06-28 18:20 zltzlt 阅读(35) 评论(0) 推荐(0)

AtCoder Beginner Contest 228 G Digits on Grid

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc228_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc228/tasks/abc228_g "AtCoder 传送门") ？这啥啊，不会。阅读全文

posted @ 2023-06-27 21:53 zltzlt 阅读(43) 评论(0) 推荐(0)

AtCoder Beginner Contest 238 Ex Removing People

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc238_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc238/tasks/abc238_h "AtCoder 传送门") 考虑期望转计数，方阅读全文

posted @ 2023-06-27 13:34 zltzlt 阅读(64) 评论(0) 推荐(0)

AtCoder Beginner Contest 307 Ex Marquee

摘要：[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc307_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc307/tasks/abc307_h "AtCoder 传送门") 一开始看错题了，看阅读全文

posted @ 2023-06-26 20:19 zltzlt 阅读(45) 评论(0) 推荐(0)

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随笔分类 - 做题记录

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