随笔分类 - AtCoder
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,
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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。
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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
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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
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摘要:[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc307_g "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc307/tasks/abc307_g "AtCoder 传送门") 考虑我们如果确定了
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摘要:[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc245_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc245/tasks/abc245_h "AtCoder 传送门") 很好的题。 下文令
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摘要:[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc252_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc252/tasks/abc252_h "AtCoder 传送门") ~~不知道为什么可
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摘要:[洛谷传送门](https://www.luogu.com.cn/problem/AT_abc262_h "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/abc262/tasks/abc262_h "AtCoder 传送门") 先将 $m$ 和所
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