QQpet exploratory park Today, more and more people begin to raise a QQpet. You can get a lot of pleasure from it, although it does not have a real life and it calls for huge patience to take care of it. There is a place called QQpet exploratory park…
A - QQpet exploratory park HDU - 1493 Today, more and more people begin to raise a QQpet. You can get a lot of pleasure from it, although it does not have a real life and it calls for huge patience to take care of it. There is a place called QQpet…
[题目]题意:N个城市形成一棵树,相邻城市之间的距离是1,问访问K个城市的最短路程是多少,共有M次询问(1 <= N, M <= 100000, 1 <= K <= N). [思路] 访问K个城市的路线: 可以发现它由一条主线和若干支线构成,并且主线上的边只用访问一次,而支线上的边必须且只用访问两次.而题目给定的是一棵树,那么访问K的城市就必须且仅需要走K-1条边.总边数是固定的,我们只需要保证主线最长即可,所以就是在树中找最长链. [找最长链]树形dp,dp[i]表示他的子树的最…
题目链接 http://codeforces.com/contest/711/problem/C Description ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided to be naughty and color the trees in the park. The trees are numbered wit…
C. Coloring Trees ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided to be naughty and color the trees in the park. The trees are numbered with integers from 1 to n from left to right…
传送门:http://codeforces.com/problemset/problem/711/C 题目: C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They wal…
题目链接: C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided…
[HNOI 2007]神奇游乐园 #include <bits/stdc++.h> #define maxn 110 using namespace std; typedef long long ll; int n, m; int a[maxn][maxn]; ll ans = -1ll << 60; #define M 2000010 #define mod 997 struct Hashmap{ ll st[M]; int h[1000], size, nxt[M]; ll f…
Coloring Trees Problem Description: ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided to be naughty and color the trees in the park. The trees are numbered with integers from 1 to n fr…
http://codeforces.com/contest/711 C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where…
C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided to be…
[BZOJ2310]ParkII Description Hnoi2007-Day1有一道题目 Park:给你一个 m * n 的矩阵,每个矩阵内有个权值V(i,j) (可能为负数),要求找一条回路,使得每个点最多经过一次,并且经过的点权值之和最大,想必大家印象深刻吧． 无聊的小 C 同学把这个问题稍微改了一下:要求找一条路径,使得每个点最多经过一次,并且点权值之和最大,如果你跟小 C 一样无聊,就麻烦做一下这个题目吧． Input 第一行 m, n,接下来 m行每行 n 个数即． V( i,j…
C. Coloring Trees time limit per test:2 seconds memory limit per test:256 megabytes input:standard input output:standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where n trees grow. They decided to be…
B. Om Nom and Dark Park Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/526/problem/B Description Om Nom is the main character of a game "Cut the Rope". He is a bright little monster who likes visiting friends living a…
Disney's FastPass Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4114 Description Disney's FastPass is a virtual queuing system created by the Walt Disney Company. First introduced in 1999 (thugh the idea of a…
题目链接:https://vjudge.net/problem/CodeForces-922E E. Birds time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Apart from plush toys, Imp is a huge fan of little yellow birds! To summon birds, Im…
HDU#4607. Park Visit 题目描述 Claire and her little friend, ykwd, are travelling in Shevchenko's Park! The park is beautiful - but large, indeed. N feature spots in the park are connected by exactly (N-1) undirected paths, and Claire is too tired to visi…
[POJ 2750] Potted Flower(线段树套dp) Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 4566 Accepted: 1739 Description The little cat takes over the management of a new park. There is a large circular statue in the center of the park, surrou…
C. Coloring Trees time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon has arrived at Udayland! They walked in the park where ntrees grow. They decided to be n…
题面 传送门:http://codeforces.com/problemset/problem/840/C C. On the Bench time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output A year ago on the bench in public park Leha found an array of n numbers. L…
网页链接:点击打开链接 Apart from plush toys, Imp is a huge fan of little yellow birds! To summon birds, Imp needs strong magic. There are n trees in a row on an alley in a park, there is a nest on each of the trees. In the i-th nest there are ci birds; to summ…
