01 A complete backpack problem.
This mainly describes the number of combinations. There are more people doing two-dimensional DP. here we can use one-dimensional DP.
One-dimensional transformation equation: DP [J] = DP [J-I] + dp [J]; where I represents the weight and J represents the current backpack capacity.
This means that DP [J-I] indicates the maximum combination of J-I backpack weights. If the size of the backpack is J, that is, you can pack the I-th item into a backpack, so there is a D
Simple recursion (recursive statements do not want to be written), but they must be highly precise.
The result is not 1A... Thank you...
To write high precision, suddenly think of Pascal's advanced features, which can define operator, write class, and bring the unit avltree !!!
(Tokens are actually words)
1 /************************************************************** 2 Problem: 1655 3 User: rausen 4 Language: Pascal 5 Result: Accepted 6 Time:56 ms 7 Memory:7
equation is a little different.Equation d[i][j]--The number of integers I, the largest integer in the division is less than JThus the classification is discussed, if I, the division of Integer I, the largest integer must be less than or equal to I, so d[i][j] = D[i][i].If i = j, the division of Integer I, the individual i is a division, so, the division of Integer I can be divided into a separate I and no I division, then d[i][j] = d[i][j-1]+1If I > J, the division of Integer I can be divided i
]: Indicates how many combinations of J coins are available when calculating the current I item.Then state conversion: dp[i][j] = Dp[i-1][j] + Dp[i][j-i]//dp[i-1][j] represents the number of combinations calculated for the previous item, that is, the number of combinations that do not buy I items, Dp[i][j-i] Indicates the number of combinations of I items that are vacated I coinsDifficulties:If you look closely, you will find that not only the two-dimensional arrays are not used, but even scroll
Dollar dayztime limit:1000msmemory limit:65536kb64-bit integer IO format:%lldJava class Name:MainPrevsubmitstatus Statistics discuss NextFarmer John goes to Dollar days at the Cow Store and discovers a unlimited number of tools on sale. During his first visit, the tools is selling variously for $, $, and $. Farmer John has exactly $ to spend. He can buy 5 tools at $1 tool at $ and a additional 1 tool at $. Of course, there is other combinations for a total of 5 different ways FJ can spend all he
Dollar Dayz
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 4220
Accepted: 1642
DescriptionFarmer John goes to Dollar days at the Cow Store and discovers a unlimited number of tools on sale. During his first visit, the tools is selling variously for $, $, and $. Farmer John has exactly $ to spend. He can buy 5 tools at $1 tool at $ and a additional 1 tool at $. Of course, there
Dollar Dayzcrawling in process ...crawling failedTime limit:MS Memory Limit:65536KB 64bit IO Format:%I 64D %i64u SubmitStatus Practice POJ 3181Appoint Description:System Crawler (2016-05-27) DescriptionFarmer John goes to Dollar days at the Cow Store and discovers a unlimited number of tools on sale. During his first visit, the tools is selling variously for $, $, and $. Farmer John has exactly $ to spend. He can buy 5 tools at $1 tool at $ and a additional 1 tool at $. Of course, there is othe
DescriptionFarmer John goes to Dollar days at the Cow Store and discovers a unlimited number of tools on sale. During his first visit, the tools is selling variously for $, $, and $. Farmer John has exactly $ to spend. He can buy 5 tools at $1 tool at $ and a additional 1 tool at $. Of course, there is other combinations for a total of 5 different ways FJ can spend all he money on tools. Here they is:1 @ us$3 + 1 @ us$2 1 @ us$3 + 2 @ us$1 1 @ us$2 + 3 @ us$1 2 @ us$2 + 1 @ us$1 5 @ us$1Writ
money is converted to integers here +0.5! Prevent accuracy Errors! at } - return 0; -}And with scanf and printf, you just need to be so concise:1 while (scanf ("%lf", money), money!=0.00) {2 printf (" %6.2f%17lld\n", money,f[int(money*+0.5)]); 3 }And then the POJ 3181:http://poj.org/problem?id=3181.Although still use coins as background, but in fact, is an integer division, the beginning of my array opened small, the result of Re, and later opened a large array after forgetting t
+ 2 + 1, 3 + 1 + 1 + 12 + 2 + 2, 2 + 2 + 1 + 1, 2 + 1 + 1 + 1 + 11 + 1 + 1 + 1 + 1 + 1Assume that the number of F (n,m) integer n is divided, where M represents the maximum number of sequences in which N is splitConsider the boundary state:M = 1 or N = 1 has only one partition: F (All) = 1M = N: equals the number of divisions of M-1 plus 1: f (n,n) = f (n,n-1) + 1M > N: It is supposed that the maximum number of the N-divided sequence will not exceed N, so f (n,m) = f (n,n)M Using dynamic progra
POJ 3181 Dollar Dayz 01 full backpack problem, pojdayz
01 A complete backpack problem.
This mainly describes the number of combinations. There are more people doing two-dimensional dp. here we can use one-dimensional dp.
One-dimensional transformation equation: dp [j] = dp [j-I] + dp [j]; where I represents the weight and j represents the current backpack capacity.
This means that dp [j-I] indicates the maximum combination of j-I backpack weights. If
Project Background: the ratio of reading to writing is about. the number of users is more than one million, and the concurrency is about 4000 (high or low, high to 10 K, and low to 1 K) the performance of several servers is almost the same, and load balancing can basically be evenly distributed to each server. I want them to directly one to one through load balancing... project background:
The ratio of reading to writing is about. the number of users
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