用C语言解决足球队,Think I’ll Buy Me a Football Team

Problem Description
Falling Stocks. Bankrupted companies. Banks with no Cash. Seems like the best time to invest: ``Think I'll buy me a football team!"

No seriously, I think I have the solution to at least the problem of cash in banks. Banks nowadays are all owing each other great amounts of money and no bank has enough cash to pay other banks' debts even though, on paper at least, they should have enough money to do so. Take for example the inter-bank loans shown in figure (a). The graph shows the amounts owed between four banks (A ...D). For example, A owes B 50M while, at the same time, B owes A 150M. (It is quite common for two banks to owe each other at the same time.) A total amount of 380M in cash is needed to settle all debts between the banks.

In an attempt to decrease the need for cash, and after studying the example carefully, I concluded that there's a lot of cash being transferred unnecessarily. Take a look:

  1. C owes D the same amount as D owes A, so we can say that C owes A an amount of 30M and get D out of the picture.
  2. But since A already owes C 100M, we can say that A owes C an amount of 70M.
  3. Similarly, B owes A 100M only, (since A already owes B 50M.) This reduces the above graph to the one shown in figure (b) which reduces the needed cash amount to 190M (A reduction of 200M, or 53%.)
  4. I can still do better. Rather than B paying A 100M and A paying 70M to C, B can pay 70M (out of A's 100M) directly to C. This reduces the graph to the one shown in figure (c). Banks can settle all their debts with only 120M in cash. A total reduction of 260M or 68%. Amazing!

I have data about inter-bank debts but I can't seem to be able to process it to obtain the minimum amount of cash needed to settle all the debts. Could you please write a program to do that?

Input
Your program will be tested on one or more test cases. Each test case is specified on N + 1 lines where N < 1, 000 is the number of banks and is specified on the first line. The remaining N lines specifies the inter-bank debts using an N×N adjacency matrix (with zero diagonal) specified in row-major order. The ith row specifies the amounts owed by the ith bank. Amounts are separated by one or more spaces. All amounts are less than 1000. The last line of the input file has a single 0.

Output
For each test case, print the result using the following format:

k . B A

where k is the test case number (starting at 1,) is a space character, B is the amount of cash needed before reduction and A is the amount of cash after reduction.

Sample Input
4
0 50 100 0
150 0 20 0
0 0 0 30
30 0 0 0
0

Sample Output
1. 380 120

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Problem Description   Remember our childhood? A few naked children throw stones standing on the same position, the one throws farther win the game. Aha, of course, there are some naughty boys who care more about whether they can urinate father.   You believe it or not, anyway, I believed. Nowadays, some of the children are smarter than we were, while others may be more naughty.   A week ago, I saw several children throw stones. In fact, they are more clever than we were, since the game they played, apparently, is more complex than we did. Maybe you have different points of view, however, you’d better learn about the rules of the game before expressing your views. A group of children take turns to throw stones standing on the same position. After some child throw a stone, the children will draw a convex polyhedron with smallest volume together to enclose all the stones thrown by them. You may assume that the stone is so small as to be abstracted as a point in three-dimensional space. Naively, the children regard the space enclosed by the convex polyhedron as territory under their control. After a child throw his stone, the score he obtains equals the incremental of the volume of their territory. Unfortunately, the first three child’s score will always be zero. At last, the child with the highest score will win the game, and known as the "King".   I think you have accepted my opinion already, for the rules of their throwing stones game are really complicated. But, you also don’t need to be frustrated for it. Now, in order to show you are smarter, maybe you can write a program to help the children point out their "King". Input   Input consists of a number of cases. The data of each case appears on a number of input lines, the first of which contains an integer N. The following N lines contain three number (xi, yi, zi) indicating coordinates of the stone thrown by the i-th child. Note: 1 <= N <= 10^4, 1 <= i <= N, -10^4 <= xi , yi , zi <= 10^4. Output   For each test case, you should output two lines. The first line is "Case #K:", K means the number of the test case. The second line is "i v", i means index of the "King" and v means the score of the "King". If there are more than one "King", output the one throws stone earlier than others.   Please round the result to 2 digits after decimal point if necessary. Sample Input 4 1 0 0 1 1 0 0 1 0 0 0 1 5 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 Sample Output Case #1: 4 0.17 Case #2: 5 0.33
用 C语言解决,Once Around the Lock
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Problem Description Kids in kindergarten enjoy playing a game called Hawk-and-Chicken. But there always exists a big problem: every kid in this game want to play the role of Hawk. So the teacher came up with an idea: Vote. Every child have some nice handkerchiefs, and if he/she think someone is suitable for the role of Hawk, he/she gives a handkerchief to this kid, which means this kid who is given the handkerchief win the support. Note the support can be transmitted. Kids who get the most supports win in the vote and able to play the role of Hawk.(A note:if A can win support from B(A != B) A can win only one support from B in any case the number of the supports transmitted from B to A are many. And A can't win the support from himself in any case. If two or more kids own the same number of support from others, we treat all of them as winner. Here's a sample: 3 kids A, B and C, A gives a handkerchief to B, B gives a handkerchief to C, so C wins 2 supports and he is choosen to be the Hawk. Input There are several test cases. First is a integer T(T <= 50), means the number of test cases. Each test case start with two integer n, m in a line (2 <= n <= 5000, 0 <m <= 30000). n means there are n children(numbered from 0 to n - 1). Each of the following m lines contains two integers A and B(A != B) denoting that the child numbered A give a handkerchief to B. Output For each test case, the output should first contain one line with "Case x:", here x means the case number start from 1. Followed by one number which is the total supports the winner(s) get. Then follow a line contain all the Hawks' number. The numbers must be listed in increasing order and separated by single spaces. Sample Input 2 4 3 3 2 2 0 2 1 3 3 1 0 2 1 0 2 Sample Output Case 1: 2 0 1 Case 2: 2 0 1 2
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Description "Forget it," Garret complained, throwing down the controller to his PlayStation VIII, "this level is impossible." He had just "died" for the 17th time on level 54 of the game "Lemmings 9: Lost in Space". "No it isn't," his brother Ferret replied, "and I can prove it." Ferret pulled his PlaySkool PDA from the back pocket of his Levi's Huggies. "First, picture the level as a rectangular grid." Ferret punched a few of the buttons on his PDA and a rectangle appeared as he described. "Your character, a Lemming holding an umbrella, starts at the top of this rectangle. His goal is to reach the bottom without dying." "I know that, you weasel, but what about the laser guns?" Garret whined. "The name is Ferret, and I was just getting to that. If we represent the level as a rectangular grid, then the Lemming can occupy one square and each laser gun can occupy a square. Remember the laser guns are cyclic: they all shoot up the first turn, right the second turn, down the third turn, left the fourth turn, and then repeat the sequence." "But you're forgetting the pits of lava!" Garret exclaimed. "You didn't let me finish. Each pit of lava also occupies a square. And each plot of grass, the Lemming's destination, can also occupy a square. Then, it's just a matter of manipulating the Lemming and laser beams in a series of turns to determine if it is possible for the Lemming to reach the bottom without 'dying'." "You think you're so smart, Ferret, let's see if you can explain that again in a clear, concise way." "Certainly": The level will consist of a grid of squares. The way each laser beam and the Lemming moves can be described in "turns". To determine if the Lemming can reach the bottom of the level without dying, Ferret devised some rules: Each turn will consist of two steps: First, the laser guns will "fire" and maintain until the end of the turn, a beam in a direction dependent on the number of the turn. On the first turn, each laser gun will shoot up (all squares directly above a laser gun are "unsafe" and cannot be occupied by the Lemming); on the second turn, each laser gun will shoot right; on the third turn, each laser gun will shoot down; on the fourth turn, each laser gun will shoot left; on the fifth turn, the sequence will repeat. Example: Column 01234 R 0| L |<- The Lemming will always start in a column on row 0 o 1| | In this example, on the first turn, the laser beam w 2| S | will occupy squares (3,0),(3,1); second turn, (4,2); 3| | third turn, (3,3),(3,4),(3,5),(3,6); fourth turn, 4| | (0,2),(1,2),(2,2); fifth turn (repeating), (3,0),(3,1), etc. 5| | (squares are represented using (column,row) notation) 6|GPPGG|<- The pits of lava and grass squares will always be in the last row Second, the Lemming will always move one row down, but to any one of three columns: one column to the left, one column to the right, or remain in the same column. In the above example, on the first turn the Lemming (L) could move to square (1,1), (2,1), or (3,1) (if he moved to (3,1), though, he would die because of the laser beam). However, on any turn the Lemming cannot move outside of the grid (i.e., he cannot move to column -1, or to a column number equal to the number of columns). The level is considered "possible" if the Lemming can reach any "grass" square without dying after a series of turns. The Lemming will die if at any point he occupies the same square as a laser gun, its beam, or a pit of lava. This includes: The Lemming moving into a square a pit of lava occupies, The Lemming moving into a square a laser gun occupies, The Lemming moving into a square a laser beam occupies (even if it is a grass square!), A laser gun firing a beam into a square the Lemming occupies Input Input to this problem will consist of a (non-empty) series of up to 100 data sets. Each data set will be formatted according to the following description, and there will be no blank lines separating data sets. Each data set will describe the starting conditions of the level. A single data set has the following components: Start line - A single line, "START x y", where 0 < x < 10 and x is the number of columns in the grid representing the level and 1 < y < 10 and y is the number of rows in the grid representing the level. The next y lines will represent the rows of the level, starting with row 0 (the top). Each line will consist of x letters. The letters will represent components of the level as follows: L - Lemming (there will only be one 'L' per data set, and it will always be in row 0) S - laser gun (these squares will never be in the final row) P - pit of lava (these squares will always be in the final row) G - grass (these squares will also always be in the final row) O - "empty" square of air End line -- A single line, "END". Following the final data set will be a single line, "ENDOFINPUT". Output Output for each data set will be exactly one line. The line will either be "FERRET" or "GARRET" (both all caps with no whitespace leading or following). "FERRET" will appear if the Lemming can make it safely (without dying) to any grass square at the bottom of the level after a series of turns. "GARRET" will be output for a data set if it fails to meet the criteria for a "FERRET" line. Sample Input START 5 7 OOLOO OOOOO OOOSO OOOOO OOOOO OOOOO GPPGG END START 3 3 OLO OSO GGG END START 5 8 LOOOS OOOOO OOOOO OOOOO OOOOO OOOOO OOOOO PPPPG END ENDOFINPUT Sample Output FERRET GARRET GARRET
C语言问题的编写,Steganography
Problem Description In cryptography, the goal is to encrypt a message so that, even if the the message is intercepted, only the intended recipient can decrypt it. In steganography, which literally means "hidden writing", the goal is to hide the fact that a message has even been sent. It has been in use since 440 BC. Historical methods of steganography include invisible inks and tatooing messages on messengers where they can't easily be seen. A modern method is to encode a message using the least-significant bits of the RGB color values of pixels in a digital image. For this problem you will uncover messages hidden in plain text. The spaces within the text encode bits; an odd number of consecutive spaces encodes a 0 and an even number of consecutive spaces encodes a 1. The four texts in the example input below (terminated by asterisks) encode the following bit strings: 11111, 000010001101101, 01, and 000100010100010011111. Each group of five consecutive bits represents a binary number in the range 0–31, which is converted to a character according to the table below. If the last group contains fewer than five bits, it is padded on the right with 0's. " " (space) 0 "A" – "Z" 1–26 "'" (apostrophe) 27 "," (comma) 28 "-" (hyphen) 29 "." (period) 30 "?" (question mark) 31 The first message is 111112 = 3110 = "?". The second message is (00001, 00011, 01101)2 = (1, 3, 13)10 = "ACM". The third message is 010002 = 810 = "H", where the underlined 0's are padding bits. The fourth message is (00010, 00101, 00010, 01111, 10000)2 = (2, 5, 2, 15, 16)10 = "BEBOP". Input The input consists of one or more texts. Each text contains one or more lines, each of length at most 80 characters, followed by a line containing only "*" (an asterisk) that signals the end of the text. A line containing only "#" signals the end of the input. In addition to spaces, text lines may contain any ASCII letters, digits, or punctuation, except for "*" and "#", which are used only as sentinels. Output For each input text, output the hidden message on a line by itself. Hidden messages will be 1–64 characters long. Note: Input text lines and output message lines conform to all of the whitespace rules listed in item 7 of Notes to Teams except that there may be consecutive spaces within a line. There will be no spaces at the beginning or end of a line. Sample Input Programmer, I would like to see a question mark. * Behold, there is more to me than you might think when you read me the first time. * Symbol for hydrogen? * A B C D E F G H I J K L M N O P Q R S T U V * # Sample Output ? ACM H BEBOP
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