2013 Warm up 3 -- Skill --- dp】的更多相关文章

题意:求n位数字,满足非递减的个数. dp[ i ] [ j ] = sum( dp[i -1] [ k ] );  k =>( j , 9); #include<iostream> #include<cstdio> #include<cstring> #include<cstdlib> using namespace std; ][]={}; ; void prepare() { int i,j,s; ;i<=;i++) { dp[][i]=-…
Palindrome subsequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/65535 K (Java/Others)Total Submission(s): 88    Accepted Submission(s): 26 Problem Description In mathematics, a subsequence is a sequence that can be derived from…
意甲冠军:求0-B见面<=F[A]所有可能的 思维:数字DP,内存搜索 #include <iostream> #include <cstring> #include <algorithm> #include <cstdio> using namespace std; int A, B; int dp[20][200000]; int bit[20]; int dfs(int cur, int num, int flag) { if (cur == -…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4352 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description #define xhxj (Xin Hang senior sister(学姐)) If you do not know xhxj, then carefully reading the ent…
<开篇> Boost.DateTime库提供了时间日期相关的计算.格式化.转换.输入输出等等功能,为C++的编程提供了便利.不过它有如下特点: 1. Boost.DateTime 只支持1400年以后的任何Gregorian日历日期.如果你需要计算再早的日期,则需要寻求其他库来支持. 日期和时间是编程过程中常用的操作.在C标准库中,<time.h>提供了time_t类型.和tm结构类型的时间日期相关函数.Windows API也提供了FILETIME类型的相关函数.由于这里是介绍b…
/** 题目大意: 给你一个无向连通图,问加上一条边后得到的图的最少的割边数; 算法思想: 图的边双连通Tarjan算法+树形DP; 即通过Tarjan算法对边双连通缩图,构成一棵树,然后用树形DP求最长链,连接首尾即可;剩下的连通块即为所求答案; 算法思路: 对图深度优先搜索,定义DFN(u)为u在搜索树中被遍历到的次序号; 定义Low(u)为u或u的子树中能通过非父子边追溯到的最早的节点,即DFN序号最小的节点; 则有: Low(u)=Min { DFN(u), Low(v),(u,v)为树…
题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=4800 Problem Description A role-playing game (RPG and sometimes roleplaying game) is a game in which players assume the roles of characters in a fictional setting. Players take responsibility for acting…
Warm up Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 3160    Accepted Submission(s): 718 Problem Description N planets are connected by M bidirectional channels that allow instant transport…
Warm up Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 90    Accepted Submission(s): 12 Problem Description N planets are connected by M bidirectional channels that allow instant transportatio…
Warm up 2 Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 28    Accepted Submission(s): 8 Problem Description Some 1×2 dominoes are placed on a plane. Each dominoe is placed either horizontally…