题很简单,一开始写代码,是用整数的格式写的,怎么跑都不对,就以为算法错了,去看大佬们的算法STL全排列:next_permutation(); 又双叒叕写了好几遍,PE了将近次,直到跑了大佬代码发现,原来格式是这样的. 下面是实现全排列的两段代码,睡觉睡觉. STL电动 #include<iostream> #include<cstdio> #include<cstring> #include<map> #include<set> #includ…

按 被中科大软件学院二年级研究生 HCOONa 骂为“误人子弟”之后(见:<中科大的那位,敢更不要脸点么?> ),继续“误人子弟”. 问题: 题目:(感谢 王爱学志 网友对题目给出的翻译)     排名 题目要求:     程序运行时间要不大于1000ms,程序的内存大小不大于32756k.     向审题系统提交总时间是2843秒,审题系统接受的提交时间是860秒. 题目描述:     Jackson想知道他在班级中的排名.教授已经公布班级中人的     学号和分数的列表.计算Jackson…

Help Johnny(类似杭电3568题) Description Poor Johnny is so busy this term. His tutor threw lots of hard problems to him and demanded him to  accomplish those problems in a month. What a wicked tutor! After cursing his tutor thousands of times,  Johnny real…

杭电2093题,Java版 虽然不难但很麻烦. import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.Scanner; /** * @Author Yun * @Date 2020/9/9 8:56 * * Accepted!!!!! */ class node implements Comparable<node>{ String name; int…

最近在尝试做acm试题,刚刚是1001题就把我困住了,这是题目: Problem Description In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + ... + n.   Input The input will consist of a series of integers n, one integer per line   Output For each case, output SUM(n) in one…

Robberies 点击打开链接 背包;第一次做的时候把概率当做背包(放大100000倍化为整数):在此范围内最多能抢多少钱  最脑残的是把总的概率以为是抢N家银行的概率之和- 把状态转移方程写成了f[j]=max{f[j],f[j-q[i].v]+q[i].money}(f[j]表示在概率j之下能抢的大洋);  正确的方程是:f[j]=max(f[j],f[j-q[i].money]*q[i].v)  当中,f[j]表示抢j块大洋的最大的逃脱概率,条件是f[j-q[i].money]可达,也就…

杭电acm题目分类版本1 1002 简单的大数 1003 DP经典问题,最大连续子段和 1004 简单题 1005 找规律(循环点) 1006 感觉有点BT的题,我到现在还没过 1007 经典问题,最近点对问题,用分治 1008 简单题 1009 贪心 1010 搜索题,剪枝很关键 1011 1012 简单题 1013 简单题(有个小陷阱) 1014 简单题 1015 可以看作搜索题吧 1016 经典的搜索 1017 简单数学题 1018 简单数学题 1019 简单数学题 1020 简单的字符串…

最近想学DP,锻炼思维,记录一下自己踩到的坑,来写一波详细的结题报告,持续更新. 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 Problem 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…

Problem Description A palindrome is a symmetrical string, that is, a string read identically from left to right as well as from right to left.  You are to write a program which, given a string, determines the minimal number of characters to be insert…

Problem Description It is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four letters, A, C, G, and T. Biologists have been interested in identifying human genes and  determin…