George met AbdelKader in the corridor of the CS department busy trying to fix a group of incorrect equations. Seeing how fast he is, George decided to challenge AbdelKader with a very large incorrect equation. AbdelKader happily accepted the challeng…

要点 \(\sum{w_i} <= 1e8\)是有意味的. 设\(dp[i]\)为至少可以承受重量\(i\)的最大可达高度.转移时可以转移的\(j\)必须满足加上它之后得保证各层不能超重,所以\(dp[j]\)会由\(dp[j + w_i]\)转移过来,且\(j < w_i\). 复杂度\(O(nlogn+\sum{w_i})\). const int maxn = 1e5 + 5, maxw = 1e8 + 5; int n, d, ans; struct frog { int l, w,…

dp[i][j][k]表示第i位填数字k时,与后面的相连模数为j时,后面的数字最小填多少. 测得我提心吊胆还以为复杂度高了,结果出来46ms还是cf评测姬强啊. #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include <cstring> #include <cstdlib> #include <cmath> #include &l…

dp[i][j][0/1]:第i天处于第j状态要不要吃. const int maxn = 1e2 + 5; int n, a[maxn], b[maxn]; int dp[maxn][maxn][2]; int main() { read(n), read(b[1]); rep(i, 1, n) read(a[i]); rep(i, 2, n) b[i] = b[i - 1] * 2 / 3; rep(i, 1, n) { rep(j, 1, i) { dp[i][j][0] = dp[i -…

LightOJ 1033  Generating Palindromes(dp) 题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87730#problem/A 题目: Description By definition palindrome is a string which is not changed when reversed. "MADAM" is a nice example of palindrome.…

lightOJ 1047   Neighbor House (DP) 题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87730#problem/C 题目: Description The people of Mohammadpur have decided to paint each of their houses red, green, or blue. They've also decided that no two n…

UVA11125 - Arrange Some Marbles(dp) option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=2066" target="_blank" style="">题目链接 题目大意:给你n种不同颜色的弹珠.然后给出每种颜色的弹珠的个数,如今要求你将这些弹珠排序,要求同样颜色的部分最多3个.然后同样颜色的弹珠称…

[POJ 3071] Football(DP) Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 4350   Accepted: 2222 Description Consider a single-elimination football tournament involving 2n teams, denoted 1, 2, -, 2n. In each round of the tournament, all tea…

学习qzz的命名,来写一篇关于动态规划(dp)的入门博客. 动态规划应该算是一个入门oier的坑,动态规划的抽象即神奇之处,让很多萌新 萌比. 写这篇博客的目标,就是想要用一些容易理解的方式,讲解入门动态规划的真正意义. 奶萌兔的温馨提示:建议先理解dfs哦~(本文以一种较为新奇的方式解释DP) 动态规划 那什么是动态规划? 来问问神奇的奶萌兔吧(强行盗梗)! (奶萌兔来给你讲解啦~虽然还在睡觉=w=) 动态规划(英语:Dynamic programming,简称DP)是一种在数学.管理科学.计…

Tour(dp) 给定平面上n(n<=1000)个点的坐标(按照x递增的顺序),各点x坐标不同,且均为正整数.请设计一条路线,从最左边的点出发,走到最右边的点后再返回,要求除了最左点和最右点之外每个点恰好经过一次,且路径总长度最短.两点间的长度为它们的欧几里得距离. 首先转换一下题意,可以看作找到两条不相交(除了起点终点)且总长最短的路径.这种题型有一个套路,就是让两个点再路径上模拟前进.如果用\(d(i, j)\)表示第一个人走到i,第二个人走到j,那么就不能设计出转移方程,因为不能保证两个人…