最短路变形或最大生成树变形. 问 目标两地之间能通过的小重量. 用最短路把初始赋为INF.其它为0.然后找 dis[v]=min(dis[u], d); 生成树就是把最大生成树找出来.直到出发和终点能沟通的时候,最小的边就是. Kruskal: #include<cstdio> #include<cstring> #include<string> #include<queue> #include<algorithm> #include<ma…

Heavy Cargo Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 3768   Accepted: 2013 Description Big Johnsson Trucks Inc. is a company specialized in manufacturing big trucks. Their latest model, the Godzilla V12, is so big that the amount…

POJ :http://poj.org/problem?id=1065 ZOJ: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=25 看大神的代码的研究的... 心情不好该学习还是要学习的....QAQ 其实题目的意思就是把所有元素分为最少的堆数,每堆有l<=l' and w<=w' 按l排序后(l相等则按w),问题转化为把所有元素分为最少的堆数,每堆有w<=w'(l<=l' 显然成立) 即已知一个数列,要求最…

poj 1797 Heavy Transportation Description Background Hugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man who tells him whether there really is a way from the place his customer has…

ZOJ:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=312 POJ:http://poj.org/problem?id=1595 题目大意: 给你两个数n和c,如果1~n(包括1和n)之间的素数个数为偶数个,则输出中间c*2个素数否则输出中间c*2-1个素数. 思路: 呀呀呀,玩了一天了,A道水题洗洗睡吧. 直接筛选素数打表. 注意c比1~n的个数大的情况要把1~n中所以素数输出. OK,然后这题1也算素数.. #incl…

F - Heavy Transportation Time Limit:3000MS     Memory Limit:30000KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 1797 Description Background Hugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand busines…

Heavy Transportation Time Limit: 3000MS   Memory Limit: 30000K Total Submissions: 26968   Accepted: 7232 Description Background Hugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man…

http://poj.org/problem?id=1797 给定n个点,及m条边的最大负载,求顶点1到顶点n的最大载重量. 用Dijkstra算法解之,只是需要把“最短路”的定义稍微改变一下, A到B的路长定义为路径上边权最小的那条边的长度, 而最短路其实是A到B所有路长的最大值. #include<stdio.h> #include<string.h> #include<math.h> #include<stdlib.h> #include<alg…

题面 Background Hugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man who tells him whether there really is a way from the place his customer has build his giant steel crane to the pla…

Description Background Hugo Heavy is happy. After the breakdown of the Cargolifter project he can now expand business. But he needs a clever man who tells him whether there really is a way from the place his customer has build his giant steel crane t…