P2865 [USACO06NOV]路障Roadblocks 题目描述 Bessie has moved to a small farm and sometimes enjoys returning to visit one of her best friends. She does not want to get to her old home too quickly, because she likes the scenery along the way. She has decided t…
P2865 [USACO06NOV]路障Roadblocks 题目描述 Bessie has moved to a small farm and sometimes enjoys returning to visit one of her best friends. She does not want to get to her old home too quickly, because she likes the scenery along the way. She has decided t…
http://poj.org/problem?id=3255 Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 15680 Accepted: 5510 Description Bessie has moved to a small farm and sometimes enjoys returning to visit one of her best friends. She does not want to get…
链接:https://www.luogu.org/problemnew/show/P2865 题目描述 Bessie has moved to a small farm and sometimes enjoys returning to visit one of her best friends. She does not want to get to her old home too quickly, because she likes the scenery along the way. S…
题意 Bessie has moved to a small farm and sometimes enjoys returning to visit one of her best friends. She does not want to get to her old home too quickly, because she likes the scenery along the way. She has decided to take the second-shortest rather…
P2866 [USACO06NOV]糟糕的一天Bad Hair Day 75通过 153提交 题目提供者洛谷OnlineJudge 标签USACO2006云端 难度普及/提高- 时空限制1s / 128MB 提交 讨论 题解 最新讨论更多讨论 题目标题 题目描述 Some of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her…
P2867 [USACO06NOV]大广场Big Square 题目描述 Farmer John's cows have entered into a competition with Farmer Bob's cows. They have drawn lines on the field so it is a square grid with N × N points (2 ≤ N ≤ 100), and each cow of the two herds has positioned he…
P2176 [USACO14FEB]路障Roadblock 题目描述 每天早晨,FJ从家中穿过农场走到牛棚.农场由 N 块农田组成,农田通过 M 条双向道路连接,每条路有一定长度.FJ 的房子在 1 号田,牛棚在 N 号田.没有两块田被多条道路连接,以适当的路径顺序总是能在农场任意一对田间行走.当FZ从一块田走到另一块时,总是以总路长最短的道路顺序来走. FJ 的牛呢,总是不安好心,决定干扰他每天早晨的计划.它们在 M 条路的某一条上安放一叠稻草堆,使这条路的长度加倍.牛希望选择一条路干扰使得F…
P2867 [USACO06NOV]大广场Big Square 题目描述 Farmer John's cows have entered into a competition with Farmer Bob's cows. They have drawn lines on the field so it is a square grid with N × N points (2 ≤ N ≤ 100), and each cow of the two herds has positioned he…
P1879 [USACO06NOV]玉米田Corn Fields 题目描述 Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy corn for the cows on a number of squares. Regrettably, some of the…
题目描述 Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy corn for the cows on a number of squares. Regrettably, some of the squares are infertile and can't b…
蒟蒻刷水题的日常 这个题虽然模拟也不会超时,但我不喜欢模拟,能不模拟就不模拟,容易超时. 接下来进入正题: 实际上一开始是个很无聊的过程,你拿点,我拿点....贼无聊.我们可以把这个过程去掉.只看最后一轮谁拿走的就行了. 上代码: #include<bits/stdc++.h>//懒人专用头文件 using namespace std; int main(){ int n,a,b; ios::sync_with_stdio(0);//cin的优化,大约能优化时间到原先1/2(讲给小白,神犇勿喷…
题目描述 Some of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her messy hairstyle, FJ wants to count the number of other cows that can see the top of other cows' heads. Each cow i has a specified…
题目大意:有一个$n\times m$的矩阵,$(1 \leq m \leq 12; 1 \leq n \leq 12)$,想在其中的一些格子中种草,一些格子不能种草,且两块草地不相邻.问有多少种种植方案. 题解:状压$DP$,$f_{i,j}$表示处理到了第$i$行,当前状态为$j$的方案数 卡点:无 C++ Code: #include <cstdio> using namespace std; const int mod = 100000000; int n, m, a; int p[1…
题目描述 Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yummy corn for the cows on a number of squares. Regrettably, some of the squares are infertile and can't b…
题目描述 每天早晨,FJ从家中穿过农场走到牛棚.农场由 N 块农田组成,农田通过 M 条双向道路连接,每条路有一定长度.FJ 的房子在 1 号田,牛棚在 N 号田.没有两块田被多条道路连接,以适当的路径顺序总是能在农场任意一对田间行走.当FZ从一块田走到另一块时,总是以总路长最短的道路顺序来走. FJ 的牛呢,总是不安好心,决定干扰他每天早晨的计划.它们在 M 条路的某一条上安放一叠稻草堆,使这条路的长度加倍.牛希望选择一条路干扰使得FJ 从家到牛棚的路长增加最多.它们请你设计并告诉它们最大增量…
