洛谷 P3003 [USACO10DEC]苹果交货Apple Delivery 洛谷传送门 JDOJ 2717: USACO 2010 Dec Silver 1.Apple Delivery JDOJ传送门 Description Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpat…

跑两遍最短路就好了.. 话说这翻译2333 ---------------------------------------------------------------------- #include<cstdio> #include<queue> #include<algorithm> #include<cstring> #include<iostream>   #define rep( i , n ) for( int i = 0 ; i…

P3003 [USACO10DEC]苹果交货Apple Delivery 题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P <=…

P3003 [USACO10DEC]苹果交货Apple Delivery 这题没什么可说的,跑两遍单源最短路就好了 $Spfa$过不了,要使用堆优化的$dijkstra$ 细节:1.必须使用优先队列+堆 2.更新方式跟$Spfa$有所不同 #include<bits/stdc++.h> using namespace std; void in(int &x){ register ;; ;c=getchar();} +c-';c=getchar();} x*=f; } ],vis[],d…

洛谷 P3003 [USACO10DEC]苹果交货Apple Delivery 题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P &l…

Description Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P <= 100,000) pastures convenientl…

题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P <= 100,000) pastures conveniently numbe…

题目描述 Bessie has two crisp red apples to deliver to two of her friends in the herd. Of course, she travels the C (1 <= C <= 200,000) cowpaths which are arranged as the usual graph which connects P (1 <= P <= 100,000) pastures conveniently numbe…

http://www.lydsy.com/JudgeOnline/problem.php?id=2100 这题我要吐血啊 我交了不下10次tle.. 噗 果然是写挫了. 一开始没加spfa优化果断t 然后看了题解加了(加错了T_T)还是tle..我就怀疑数据了... 噗 原来我有个地方打错了.. 这个spfa的队列优化真神.. #include <cstdio> #include <cstring> using namespace std; #define rep(i, n) fo…

Description 贝西有两个又香又脆的红苹果要送给她的两个朋友.当然她可以走的C(1<=C<=200000)条"牛路"都被包含在一种常用的图中,包含了P(1<=P<=100000)个牧场,分别被标为1..P.没有"牛路"会从一个牧场又走回它自己."牛路"是双向的,每条牛路都会被标上一个距离.最重要的是,每个牧场都可以通向另一个牧场.每条牛路都连接着两个不同的牧场P1_i和P2_i(1<=P1_i,p2_i<…