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经典指数
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811
'Oh no, they've done it again', cries the chief designer at the Waferland chip factory. Once more the routing designers have screwed up completely, making the signals on the chip connecting the ports of two functional blocks cross each other all over the place. At this late stage of the process, it is too expensive to redo the routing. Instead, the engineers have to bridge the signals, using the third dimension, so that no two signals cross. However, bridging is a complicated operation, and thus ...
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809
IONU Satellite Imaging, Inc. records and stores very large images using run length encoding. You are to write a program that reads a compressed image, finds the edges in the image, as described below, and outputs another compressed image of the detected edges. A simple edge detection algorithm sets an output pixel's value to be the maximum absolute value of the differences between it and all its surrounding pixels in the input image. Consider the input image below: The upper left pixel in t ...
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809
Farmer John's pastoral neighborhood has N farms (2 F1 --- (13) ---- F6 --- (9) ----- F3 | | (3) | | (7) F4 --- (20) -------- F2 | | | (2) F5 | F7 Being an ASCII diagram, it is not precisely to scale, of course. Each farm can ...
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经典指数
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808
A board is a rectangular array of squares such as on a chessboard, with possibly some squares blocked off. A rook tour of a board is a path that visits each empty square of the board exactly once, moving at each step to an empty adjacent square (North, South, East or West but not diagonally). A rook tour is a rook circuit if it starts and ends on the same square. In the figures below, let the + symbol be the rook, and the X symbol be an obstruction. The following are descriptions of each figure: ...
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808
It's well known that DNA Sequence is a sequence only contains A, C, T and G, and it's very useful to analyze a segment of DNA Sequence,For example, if a animal's DNA sequence contains segment ATC then it may mean that the animal may have a genetic disease. Until now scientists have found several those segments, the problem is how many kinds of DNA sequences of a species don't contain those segments. Suppose that DNA sequences of a species is a sequence that consist of A, C, T and G,and the len ...
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805
A friend of you has just bought a new computer. Until now, the most powerful computer he ever used has been a pocket calculator. Now, looking at his new computer, he is a bit disappointed, because he liked the LC-display of his calculator so much. So you decide to write a program that displays numbers in an LC-display-like style on his computer.输入描述 The input contains several lines, one for each number to be displayed. Each line contains two integers s, n (1 The input file will be terminated b ...
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经典指数
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804
把M个同样的苹果放在N个同样的盘子里,允许有的盘子空着不放,问共有多少种不同的分法?(用K表示)5,1,1和1,5,1 是同一种分法。输入描述 第一行是测试数据输出描述 对输入的每组数据M和N,用一行输出相应的K。输入例子 1 7 3 输出例子 8 ...
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802
Word puzzles are usually simple and very entertaining for all ages. They are so entertaining that Pizza-Hut company started using table covers with word puzzles printed on them, possibly with the intent to minimise their client's perception of any possible delay in bringing them their order. Even though word puzzles may be entertaining to solve by hand, they may become boring when they get very large. Computers do not yet get bored in solving tasks, therefore we thought you could devise a pro ...
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801
You are a member of the space station engineering team, and are assigned a task in the construction process of the station. You are expected to write a computer program to complete the task. The space station is made up with a number of units, called cells. All cells are sphere-shaped, but their sizes are not necessarily uniform. Each cell is fixed at its predetermined position shortly after the station is successfully put into its orbit. It is quite strange that two cells may be touching each ...
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797
You have N stones (1 ≤ N ≤ 10), each stone is characterized by weight pi and cost vi (i = 1, ... , N). You should drop these stones by a gutter into one of the two bunkers: A or В. The mechanism of receiving bunkers switching works as follows. The stones are dropping into one of the bunkers until the weight of this bunker’s content will exceed the weight of stones in other bunker by more than D. Then the gutter switches to the other bunker. At the beginning both bunkers ...
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