题目戳 题目描述 Bessie is playing hide and seek (a game in which a number of players hide and a single player (the seeker) attempts to find them after which various penalties and rewards are assessed; much fun usually ensues). She is trying to figure out in…

典型的最短路,而且只要再加一点点操作,就能得到答案 所以可以直接套模板 具体看程序:: #include<cstdio> #include<queue>//队列专属头文件 #include<algorithm> using namespace std; ; int a[N]; int n,m,l,sum,ans; int d1[N],t[N],head1[N],next1[N],w1[N],adj1[N],k1; bool f1[N]; queue<int>…

OJ题号:洛谷2951 思路:Dijkstra+堆优化.注意是无向图,所以加边时要正反各加一遍. #include<cstdio> #include<vector> #include<ext/pb_ds/priority_queue.hpp> #define dis first #define to second ,inf=0x7fffffff; typedef std::pair<int,int> Edge; int n,m,d[N]; std::vect…

P2951 [USACO09OPEN]捉迷藏Hide and Seek 题目描述 Bessie is playing hide and seek (a game in which a number of players hide and a single player (the seeker) attempts to find them after which various penalties and rewards are assessed; much fun usually ensues)…

洛谷 P2951 [USACO09OPEN]捉迷藏Hide and Seek 洛谷传送门 JDOJ 2641: USACO 2009 Open Silver 1.Hide and Seek JDOJ传送门 题目描述 Bessie is playing hide and seek (a game in which a number of players hide and a single player (the seeker) attempts to find them after which v…

3402: [Usaco2009 Open]Hide and Seek 捉迷藏 Time Limit: 3 Sec  Memory Limit: 128 MBSubmit: 51  Solved: 40[Submit][Status] Description     贝茜在和约翰玩一个“捉迷藏”的游戏．     她正要找出所有适合她躲藏的安全牛棚．一共有N(2≤N≤20000)个牛棚,被编为1到N号．她知道约翰(捉牛者)从牛棚1出发．所有的牛棚由M(1≤M≤50000)条双向路连接,每条双向路连…

题目 3402: [Usaco2009 Open]Hide and Seek 捉迷藏 Time Limit: 3 Sec  Memory Limit: 128 MB Description     贝茜在和约翰玩一个“捉迷藏”的游戏．     她正要找出所有适合她躲藏的安全牛棚．一共有N(2≤N≤20000)个牛棚,被编为1到N号．她知道约翰(捉牛者)从牛棚1出发．所有的牛棚由M(1≤M≤50000)条双向路连接,每条双向路连接两个不同的牛棚．所有的牛棚都是相通的．贝茜认为同牛棚1距离最远的的牛…

3402: [Usaco2009 Open]Hide and Seek 捉迷藏 Time Limit: 3 Sec  Memory Limit: 128 MBSubmit: 78  Solved: 64[Submit][Status] Description     贝茜在和约翰玩一个“捉迷藏”的游戏．     她正要找出所有适合她躲藏的安全牛棚．一共有N(2≤N≤20000)个牛棚,被编为1到N号．她知道约翰(捉牛者)从牛棚1出发．所有的牛棚由M(1≤M≤50000)条双向路连接,每条双向路连…

1941: [Sdoi2010]Hide and Seek Time Limit: 16 Sec  Memory Limit: 162 MBSubmit: 830  Solved: 455[Submit][Status][Discuss] Description 小猪iPig在PKU刚上完了无聊的猪性代数课,天资聪慧的iPig被这门对他来说无比简单的课弄得非常寂寞,为了消除寂寞感,他决定和他的好朋友giPi(鸡皮)玩一个更加寂寞的游戏---捉迷藏. 但是,他们觉得,玩普通的捉迷藏没什么意思,还是…

[BZOJ1941][Sdoi2010]Hide and Seek 试题描述 小猪iPig在PKU刚上完了无聊的猪性代数课,天资聪慧的iPig被这门对他来说无比简单的课弄得非常寂寞,为了消除寂寞感,他决定和他的好朋友giPi(鸡皮)玩一个更加寂寞的游戏---捉迷藏. 但是,他们觉得,玩普通的捉迷藏没什么意思,还是不够寂寞,于是,他们决定玩寂寞无比的螃蟹版捉迷藏,顾名思义,就是说他们在玩游戏的时候只能沿水平或垂直方向走.一番寂寞的剪刀石头布后,他们决定iPig去捉giPi.由于他们都很熟悉PKU的…