题目链接:http://acm.hust.edu.cn/vjudge/contest/123674#problem/G 这题和上一道题差不多,还更简单点,直接用prim算法就行,直接贴AC代码: import java.io.BufferedInputStream; import java.util.Scanner; public class Main { final static int N = 1 << 20; static int n, m, a[][] = new int[105][1…
A - Is It A Tree? Crawling in process... Crawling failed Time Limit:1000MS Memory Limit:10000KB 64bit IO Format:%lld & %llu Description A tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or mor…
还是畅通工程 Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 41897 Accepted Submission(s): 19126 Problem Description某省调查乡村交通状况,得到的统计表中列出了任意两村庄间的距离.省政府“畅通工程”的目标是使全省任何两个村庄间都可以实现公路交通(但不一定有直接的公路相连,只要能间接通过公路可…