Problem Description Ignatius has just come back school from the 30th ACM/ICPC. Now he has a lot of homework to do. Every teacher gives him a deadline of handing in the homework. If Ignatius hands in the homework after the deadline, the teacher will r…

Doing Homework again Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 10043    Accepted Submission(s): 5875 Problem Description Ignatius has just come back school from the 30th ACM/ICPC. Now he…

动态规划就是寻找最优解的过程 最重要的是找到关系式 hdu 1003 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 题目大意:求最大字序列和,其实就是分成 以0结尾的序列 以1结尾的序列 以2结尾的序列 ... 以n结尾的序列 所以以n结尾的序列的最大值就是以n-1结尾的序列的最大值+n的值 或最大值是n的值 关系式: d[i]=max(d[i-1]+a[i],a[i]) d[i]为以i结尾的序列和的最大值,a[i]为第i个数的值 #in…

Max Sum Plus Plus Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 41033    Accepted Submission(s): 14763 Problem Description Now I think you have got an AC in Ignatius.L's "Max Sum" problem…

Doing Homework again Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1221    Accepted Submission(s): 715 Problem Description Ignatius has just come back school from the 30th ACM/ICPC. Now he ha…

Homework Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 413    Accepted Submission(s): 48 Problem Description As this term is going to end, DRD needs to start his graphical homework. In his hom…

免费馅饼 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 36612    Accepted Submission(s): 12504 Problem Description 都 说天上不会掉馅饼,但有一天gameboy正走在回家的小径上,忽然天上掉下大把大把的馅饼.说来gameboy的人品实在是太好了,这馅饼别处都不掉, 就掉落在他身旁…

给定一个长度为n的区间:求m段连续子区间的和 最大值(其中m段子区间互不相交) 思路: dp[i][j]: 前j个元素i个连续区间最大值 (重要 a[j]必须在最后一个区间内) 转移方程:dp[i][j]=max (dp[i][j-1],dp[i-1][t]) + a[j]  ( dp[i-1][t] 是 max ( dp[i-1[k]  1<=k<=j-1 ) 第j个元素与第j-1个元素连在一起 --->dp[i][j-1]   第j个元素单独一个区间               --…

Problem Description 都说天上不会掉馅饼,但有一天gameboy正走在回家的小径上,忽然天上掉下大把大把的馅饼.说来gameboy的人品实在是太好了,这馅饼别处都不掉,就掉落在他身旁的10米范围内.馅饼如果掉在了地上当然就不能吃了,所以gameboy马上卸下身上的背包去接.但由于小径两侧都不能站人,所以他只能在小径上接.由于gameboy平时老呆在房间里玩游戏,虽然在游戏中是个身手敏捷的高手,但在现实中运动神经特别迟钝,每秒种只有在移动不超过一米的范围内接住坠落的馅饼.现在给这…

HDU 1074 Doing Homework (动态规划,位运算) Description Ignatius has just come back school from the 30th ACM/ICPC. Now he has a lot of homework to do. Every teacher gives him a deadline of handing in the homework. If Ignatius hands in the homework after the d…