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The SQL statement is: SELECT * FROM table1 where ' text ' like CONCAT ('% ', (select name from table2 where ID =3), '% ');UPDATE ecs_region a,nation b SET a.code = B.code where b.province like concat ('% ', a.region_name, '% ');UPDATE ecs_region a,nation b SET a.code = B.code where b.city like concat ('% ', a.region_name, '% ');UPDATE ecs_region a,nation b SET a

Bzoj_3110_[zjoi2013]k large number of queries _ Integral binary + tree-like arrayDescriptionThere are n positions, m operations. There are two types of operations, each of which is a 1 a B C in the form of a position in the first place to the B position, and each position is joined by a number CIn the case of a 2 a B C, it is asked to ask from position A to position B, and the number of C large.InputFirst line N,mNext m line, each line shaped

is, you need a year to imitate to learn Based on the Purcell configuration give him a bug (or even a patch), you are considering the problem he has not considered, at least at this point over him, the accumulation of considerable. Well, you're convinced now. But do you really understand ?For example, do you immediately infer that even without a master configuration, you can subscribe (watch) to a master configuration on GitHub, whose update notification is equivalent to a free maintena

First of all, let's talk about the tree-like array:A tree-like array (Binary Indexed tree (BIT), Fenwick tree) is a data structure that queries and modifies the complexity of both log (n). It is primarily used to query the sum of all elements between any two bits, but only one element can be modified at a time, and a simple modification allows scope modification at the complexity of log (n), but only one el

Topic Portal: QWQAnalysisTest instructions: Give a series, ask how many five Yuan rise groupConsider simplifying the question: if the topic asks for a two-dollar ascent group, what to do.In reverse order, use a tree-like array to maintain the OK.Ternary how to do it?The expansion of the two yuan to one, that is, the third is also thrown into a tree arraySo the problem is becoming clearer:With $ dp[i][x] $ for $ a[x] $ to end the $ x $ $ Rise Group has

Fans of the situation is always different, such as some can be blowing air conditioning drink, before placing a 52-inch large LCD, although not in the presence of the scene, can feel the same warm atmosphere of the scene. Of course, unlucky eggs are also many, think of those who all day in the boss under the nose of the people who work, which is not the heart of suffering. One side is the boss's eyes dead staring at himself, on the other side is the climax of the game bursting. In fact, the so-c

Probably a lot of people have wanted to find a strange, but have the same appeal of the idea of people chatting. Like when you're bored at work, or when you see a TV show. Although chatting software is many, it is not easy to find like-minded friends quickly. If you also have this kind of demand, may as well try Cihi chat software. Cihi is a burgeoning instant messaging software that can quickly find peopl

While mobile phone photography and mobile phone app repair are already popular, the author insists that SLR or Lightroom with Adobe's Photoshop (PS) or "LR" is the way to play photography. In the past they want to ask PS Master to help p photos, but now with the mobile phone, the phone after a few random points can be made into an angel-like appearance. This is actually a kind of intangible injury to the photography geek, because the girls may not nee

Tree Gardener's troubles bzoj-1935 Shoi-2007Topic : $n$ points on a given plane, $m $ query the number of rectangular points.Note : $1\le n,m\le 5\cdot 10^5$. idea : Static two-dimensional points.$Orz winniechen$, True TM Dare write $kd-tree$, although $t$.Normal this static two-dimensional points we all want to go to the tree array. The simplest is a two-dimensional tree-like array.But the discovery does not open, so we base it on it can be of

Front of the CrapWhen it comes to reptiles, the first thing to think about is python~. It is very popular in the field of machine learning and reptile data analysis. But I'm learning the go language recently, so I wrote it with Go.TapTap CommunityThis is a high quality game sharing community, which can be said to be steam on the phone. The above user quality is very high, the core players more, see them so attentively write so many long comments, let me marvel, so this time intends to take it to