---恢复内容开始--- Beans Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4826 Accepted Submission(s): 2258 Problem Description Bean-eating is an interesting game, everyone owns an M*N matrix, which…
Emily the entrepreneur has a cool business idea: packaging and selling snowflakes. She has devised a machine that captures snowflakes as they fall, and serializes them into a stream of snowflakes that flow, one by one, into a package. Once the package is…
做一个考试系统的项目,现在从试题库里面随机抽取20道题 比如我题库有500道题(ID不连续).题目出现了,如何解决呢,随机抽取! 1,我们先把500道题的id存进一个长度为500的数组. 2,实现代码具体如下: ArrayList arrP = new ArrayList(); //int[] arrP=^^^^……;//题库中题目的ID号组 ArrayList arrT = new ArrayList(); Random rand = new Random(); int i = 0; wh…
题目链接:http://www.51nod.com/onlineJudge/questionCode.html#!problemId=1050 这道题的最大子段和有两种可能,一种是常规的子段和,另一种是从结尾到开头的一个子段.常规做是一种可能,另一种带循环的则可以认为是序列中间有一段最小子段和,把这段最小子段和去掉,剩下的可能就是最大子段和了. #include <bits/stdc++.h> using namespace std; typedef long long LL; * ; int…
题目链接:51nod 1065 最小正子段和 房教说用前缀和做,然后看了别人博客懂了后就感觉,这个真有意思... #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ; const int inf = 0x3f3f3f3f; pair<long long, int> sum[N]; int a[N]; int n; int main(){ int i, j;…
题目链接:51nod 1050 循环数组最大子段和 #include<stdio.h> #include<algorithm> using namespace std; ; long long a[N]; int main(){ int n, i; ; scanf("%d", &n); ; i <= n; ++i){ scanf("%I64d", &a[i]); sum += a[i]; } ma_ed = a[]; a…
最大子段和 Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this se…
Problem Description 娜娜好不容易才在你的帮助下"跳"过了这个湖,果然车到山前必有路,大战之后必有回复,大难不死,必有后福!现在在娜娜面前的就是好多好多的糖果还有一些黑不溜秋的东西!不过娜娜眼中只有吃不完的糖果!娜娜高兴地快要蹦起来了! 这时有一位挥着翅膀的女孩(天使?鸟人?)飞过来,跟娜娜说,这些糖果是给你的~(娜娜已经两眼放光)~你可以带走~(娜娜已经流下了口水)~但是~(神马?还有但是?)~这位神仙姐姐挥一挥翅膀~飘过了一片云彩,糖果和那些黑不溜秋的东西顿时飞了…