含[最小生成树Prim]模板. Prim复杂度为$O(n^2),适用于稠密图,特别是完全图的最小生成树的求解. Desert King Time Limit: 3000MS Memory Limit: 65536K Total Submissions:31622 Accepted: 8670 Description David the Great has just become the king of a desert country. To win the respect of h…
题目描述: David the Great has just become the king of a desert country. To win the respect of his people, he decided to build channels all over his country to bring water to every village. Villages which are connected to his capital village will be water…
POJ2728 Desert King Description David the Great has just become the king of a desert country. To win the respect of his people, he decided to build channels all over his country to bring water to every village. Villages which are connected to his cap…
题目:https://loj.ac/problem/3089 没想到把根号之类的求对数变成算数平均值.写了个只能得15分的暴力. #include<cstdio> #include<cstring> #include<algorithm> #define db double using namespace std; ,K=; ; ,c[N][K],fl[N]; db ans; ],nxt[N<<],vl[N],sm[N]; int l[N],v[N],dy[…