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Rough idea, might be not precise:
- Once there was no life. There was just inanimate matter, molecules flying everywhere.
- Organic matter formed into nucleic acids
- The first organic compounds …
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Design principles in class friends , userEntity , page :
1-most of solid principles are not applied
As no interfaces or inheritance, No relations between class page ,class friends, class userEntity …
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This 'issue' is to discuss and identify Stylistic choices to be implemented. I'll start by adding a screenshot of the existing test page.
つけよう
dfs(…
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セグメントツリー
セグ木に乗る代数系
モノイド 和 | 積 | AND | OR | XOR | min | max | gcd | lcm
演算 x + y | x * y | x & y | x | y | x ^ y | min(x, y) | max(x, y) | gcd(x, y) | lcm(x, y)
単位…
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UnionFind
データのグループ化を素早く行う
not sameな頂点をN-1回つなげるとN頂点の木になる
UnionFind + スタック芸
https://atcoder.jp/contests/acl1/submissions/18374339 A - Reachable Towns
グラフの問題になる
G の各辺に対して、端点のうちどちらかを光らせることができる。光る頂点の…