题目链接:https://vjudge.net/problem/LightOJ-1422 1422 - Halloween Costumes    PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to…

B - Halloween Costumes Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%lld & %llu Submit Status Practice LightOJ 1422 Description Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as…

http://lightoj.com/volume_showproblem.php?problem=1422 做的第一道区间DP的题目,试水. 参考解题报告: http://www.cnblogs.com/ziyi--caolu/p/3236035.html http://blog.csdn.net/hcbbt/article/details/15478095 dp[i][j]为第i天到第j天要穿的最少衣服,考虑第i天,如果后面的[i+1, j]天的衣服不要管,那么dp[i][j] = dp[i…

题意:给你n天需要穿的衣服的样式,每次可以套着穿衣服,脱掉的衣服就不能再穿了,问至少要带多少条衣服才能参加所有宴会 思路:dp[i][j]代表i-j天最少要带的衣服 从后向前dp 区间从大到小 更新dp[i][j]时有两种情况 考虑第i天穿的衣服 1:第i天穿的衣服在之后不再穿了 那么 dp[i][j]=dp[i+1][j]+1; 2:第i天穿的衣服与i+1到j的某一天共用,那么dp[i][j]=min(dp[i][j],dp[i+1][k-1],dp[k][j]),前提是第i天和第k天需要的礼…

Description Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as many parties as he can. Since it's Halloween, these parties are all costume parties, Gappu always selects his costumes in such…

dp[i]][j]=min(dp[i+1][j]+1,dp[i+1][k-1]+dp[k][j]) 表示第i天到j的最小数量.如果第i天的衣服只自己穿的话,不考虑后面的就是dp[i][j]=dp[i+1][j]+1.否则就是dp[i][j]=dp[i+1][k-1]+dp[k][j],其中第k天的衣服和第i天一样,这就是考虑第i天以后还有和它穿的衣服一样的情况 //#pragma comment(linker, "/STACK:167772160")//手动扩栈~~~~hdu 用c++…

题意:给你n天分别要穿的衣服,可以套着穿,但是一旦脱下来就不能再穿了,问这n天要准备几件衣服.      ================================================================================= #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> #include<cmath>…

题意: 有个人要去参加万圣节趴,但是每到一个趴都要换上特定的服装,给定一个序列表示此人要穿的衣服编号(有先后顺序的),他可以套很多件衣服在身上,但此人不喜欢再穿那些脱下的衣服(即脱下后就必须换新的),问最少需要穿多少件衣服? 思路: 如果多件一样的相连的话就可以只穿1件.将问题化为小问题,再来连接起来,假设区间[i->j],如果color[i]和后面其中某一个颜色(假设下标为k)一样,那么color[i]=color[k].那么第i件就可能可以不穿,当且仅当 dp[i+1][k-1]+dp[k]…

区间dp的第一题----- 看题解看了好多~~终于看懂了---55555 dp[i][j] 表示第i天到第j天至少需要多少件衣服 那么第i件衣服只被第i天占用的话, dp[i][j] = dp[i+1][j] + 1 如果不只被第i天占用的话,那么假设在第k天和第i天穿一样的衣服,dp[i][j] = dp[i+1][k-1] + dp[k][j] 这一篇讲得很详细~ http://blog.csdn.net/tc_to_top/article/details/44830317 #include…

1422 - Halloween Costumes   PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Gappu has a very busy weekend ahead of him. Because, next weekend is Halloween, and he is planning to attend as many parties as he can. Since it's…