Navigation Nightmare Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usually numbered/labeled 1..N. A series of M (1 <= M < 40,000) vertical and horizontal roads each of varying lengths (1 <= length <= 1000) connect t…

#include<iostream> #include<cmath> #include<algorithm> using namespace std; ; // 东西 南北 int p[N],D[N],B[N]; struct node{ int x,y,d; ]; }e[N]; void init() { ; i < N ; i ++) { p[i] =i; D[i] =; B[i] =; e[i].x=,e[i].y=,e[i].d=; } } int fin…

Navigation Nightmare Description Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usually numbered/labeled 1..N. A series of M (1 <= M < 40,000) vertical and horizontal roads each of varying lengths (1 <= length <= 100…

任意门:http://poj.org/problem?id=1984 Navigation Nightmare Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 7783   Accepted: 2801 Case Time Limit: 1000MS Description Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usuall…

Navigation Nightmare   Description Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usually numbered/labeled 1..N. A series of M (1 <= M < 40,000) vertical and horizontal roads each of varying lengths (1 <= length <= 1…

Navigation Nightmare Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 4072   Accepted: 1615 Case Time Limit: 1000MS Description Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usually numbered/labeled 1..N. A series o…

Navigation Nightmare Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 7871   Accepted: 2831 Case Time Limit: 1000MS 题目链接:http://poj.org/problem?id=1984 Description: Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usua…

题目链接:http://poj.org/problem?id=1984 Navigation Nightmare Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 7136   Accepted: 2556 Case Time Limit: 1000MS Description Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usual…

BZOJ_3362_[Usaco2004 Feb]Navigation Nightmare 导航噩梦_并查集 Description     农夫约翰有N(2≤N≤40000)个农场,标号1到N,M(2≤M≤40000)条的不同的垂直或水 平的道路连结着农场,道路的长度不超过1000.这些农场的分布就像下面的地图一样, 图中农场用F1..F7表示, 每个农场最多能在东西南北四个方向连结4个不同的农场．此外,农场只处在道路的两端．道路不会交叉且每对农场间有且仅有一条路径．邻居鲍伯要约翰来导航,但约…

题目意思是一个图中,只有上下左右四个方向的边.给出这样的一些边, 求任意指定的2个节点之间的距离. 就是看不懂,怎么破 /* POJ 1984 并查集 */ #include <stdio.h> #include <string.h> #include <iostream> #include <algorithm> #include <math.h> using namespace std; ; int F[MAXN]; int dx[MAXN]…