cases.
First case:S is black and has at least one red child
Take a font as an example (left), and the rest of the case is symmetrical or similar. The adjustment method is to do the corresponding rotation and re-staining (right). The staining rule is: R continues to remain black, while T and P both dye black, and s will inherit the color of the previous root node p.
The 4 subtrees trees have the same black height, so all the properties of the red a
node are red, does not meet the 4 nature, so we need to adjust the judgment condition is the parent node if red, you need to continue to adjust. Here in fact there are three kinds of cases, first of all already default Z's parent node z->p color is red, the loop condition is while (z->color==red):
condition One, Z's tert-node y is red, where z is the node to be adjusted (hereinafter):
Because Z's parent node z->p and the tertiary node are all red, the z->p->p of Z's grandfather node must be bla
additional light source is equivalent to an additional addition element. In the CMYK color model, we can understand it as a passive luminous body, that is, a light source that reflects other luminous bodies, for example, all kinds of colorful dyes; in the dark room, no matter what color of paint, for us, is a Dark One (they will not take the initiative to shine, all rely on the reflection of other light sources to prove their own existence ). For another example, we can see the yellow
You do not dye the dust, let me feast for the eyes, let me read your Fang Hua-li, not to the poor and change the festival-the word. Dust on the MO In the world, perhaps there will be such a woman, seclusion in the mountains and rivers, green Plum, reading listening to music, flowers and plum, painting poem, with a simple pen, in the text of practice, for the time to trace the Qing Dynasty deliberately, for the flowers and insects ropes sentence, for
Each node of a tree can be colored with two colors. Each color has a certain cost. A special point is that if the adjacent points have been colored with the same color, it takes only half of the price for the current color.Last question: what is the minimum cost to dye the entire tree.
When using DP, you must first consider how to describe the status by using the constraints, because if a vertex adjacent to a vertex is dyed in the same color and all c
Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 4340
Each node of a tree can be colored with two colors. Each color has a certain cost. A special point is that if the adjacent points have been colored with the same color, it takes only half of the price for the current color.
Last question: what is the minimum cost to dye the entire tree.
When using DP, you must first consider how to describe the status by using the constraints, because if a vertex a
to do is to dye each black block separately. The essence of a Black Block is a black pixel.
As mentioned above, canvas is used for Pixel operations, so our operation is to dye the pixel. We obviously do not want to dye the background color, so we need to make a judgment on the background color; as mentioned above, the background color seems to have a black color
cannot have another node, then you can not have child nodes, there must be black, The number of black nodes on the left and right sub-tree of G will not wait, conclusion: In a moment, there must be only one child node N,u No child node adjustment: P and N dye black, g dye red, n points to G recursion, until n is the root node, dyed blackCase two: u=b (accurately expressed as U not), N is the left child of
fill areas.It is like in a place until the water is fully stretched around until the ground stops.
Flood fill searches for the same point fill from one point to the surrounding until there are different points.The flood fill we use is similar to this principle, which is a form of BFS.
Assume that one of the first drops of red ink in (I, j), and then the water begins to scatter and dye the upper and lower sides of it, that is (I-1, J), (I + 1, j),
This is how to use the staining method to determine a bipartite graph,
1. Dye it black, then dye its adjacent points into white, and then enter the queue
2. output queue. The vertex adjacent to this vertex is colored in the opposite color.
According to the characteristics of the bipartite graph, the point color in the same set is the same, that is
However, if this graph is not a binary graph
Topic links in thisThis question began to write a deep search, over 30% of the data, that is nAnd then read the puzzle to find that this is a dichotomy of the judgment.Let's start with an example to find the rules that can't be put into a stack. A series of "2,3,1,4"It is not easy to simulate a single stack of this sequence. Why can't we do it?If the input sequence is monotonically decreasing, the nature of a stack can be done. Direct all the stack and then all the stack can be.If the input sequ
the Tri Lurong as soon as possible to solve the case;3: Zhangxiaojin to West to find a merchants asked if there is a map, and then Hu business as expected, send people to notify the relevant Hu, Zhang Small to follow the people found the map, followed to the square, Rob Map of the people hijacked the coat is teaching, was taught to kill, map do not know the trace;4: Shang to the front-line commander of the anti-Turkic Wang Zhongsi yunzhen Show Incense process was Xiang to help follow the kidnap
Topic Link: Click to open the linkThe main idea: a rectangle consisting of n small rectangles, now to the small rectangular dyeing, but the pigment will fall, in order to prevent the confusion of pigments, so to dye the above rectangle, and then dye the rectangle below, each time to change the color to use a new brush, ask the minimum number of brushes.According to the dyeing conditions, you can find a topo
This article mainly introduces how to use ps to dye hair. next we will conduct ps hair dyeing tutorials. This article mainly introduces how to use ps to dye hair, next we will conduct the ps hair dyeing tutorial
Nowadays, many young people will sit in their hair and dye their hair in some hair dyeing shops. Nowadays, modern people are used to it. Today, I am h
Lapis Lazuli Dye is a basic Dye that is synthesized by extracting the Lapis stone ore with a rock pick or a better pick. Similar to coal, pink powder, and Diamond, lapis stone can be used immediately after exploitation.Purpose:Make it blue wool with wool. It can be used to dye the goat and trim the wool to get 1-3 blue wool. It can be used to make touchstone bloc
); }
returnx;}//returns the location of the deleted node
We'll dispose of them in 4 different cases.
First case:S is black and has at least one red child
Take a font as an example (left), and the rest of the case is symmetrical or similar. The adjustment method is to do the corresponding rotation and re-staining (right). The staining rule is: R continues to remain black, while T and P both dye black, and s will inherit the color of the pre
, so that it can be traced back to the original adjusted hair gloss.
The second process: dye hair, so that you have a full personality in the photo!
After the oil has been baked, we begin to dye the hair process. Photoshop dye hair A lot of tricks, today I will reveal to you two simple operation, but the effect is very good techn
The determination of the dichotomy graphGiven a graph with n vertices. To dye each vertex on the graph, and to make the adjacent vertex colors different.Determine if it can be dyed in up to two colors. The topic guarantees no heavy edges and self-loops.Concept: The problem of coloring the adjacent vertices into different colors is called the shading problem of graphs. The minimum number of colors required to dye
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