题目链接:点击打开链接 有n段绳子,给定n段绳子的长度,单位为厘米.求能够把这些绳子分成k段的最长的段的长度.题目中的trick是最小是1cm,长度不能小于1cm,因此要转换成int来解,然后二分可以截得的绳子的长度. #include <iostream> #include <string> #include <algorithm> using namespace std; #define INF 100000000 int l[10009]; int n, k; b…

POJ 1064 Cable master 一开始把 int C(double x) 里面写成了  int C(int x) ,莫名奇妙竟然过了样例,交了以后直接就wa. 后来发现又把二分查找的判断条件写错了,wa了n次,当 c(mid)<＝k时,令ub＝mid,这个判断是错的,因为要找到最大切割长度,当满足这个条件时,可能已经不是最大长度了,此时还继续缩小区间,自然就wa了,(从大到小递减,第一次满足这个条件的值,就是最大的值),正确的判断是当 c(mid)<k时,令ub＝mid,这样循环1…

poj 1064 Cable master 判断一个解是否可行 浮点数二分 题目链接: http://poj.org/problem?id=1064 思路: 二分答案,floor函数防止四舍五入 代码: #include <iostream> #include <stdio.h> #include <math.h> #include <algorithm> using namespace std; const int maxn = 10005; const…

题目传送门 /* 题意:n条绳子问切割k条长度相等的最长长度 二分搜索:搜索长度,判断能否有k条长度相等的绳子 */ #include <cstdio> #include <algorithm> #include <cstring> #include <cmath> using namespace std; ; const int INF = 0x3f3f3f3f; double w[MAXN]; int n, k; int check(double len…

题目链接:http://poj.org/problem?id=1064 Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to organize the most honest contest ever. It was decided to conn…

题目链接: 传送门 Cable master Time Limit: 1000MS     Memory Limit: 65536K 题目描述 有N条绳子,它们长度分别为Li.如果从它们中切割出K条长度相同的绳子的话,这K条绳子每条最长能有多长?答案保留小数点后两位. 思路 二分搜索答案 #include<iostream> #include<cstdio> #include<cmath> #define EPS 1e-6 const int INF = 100000;…

Cable master Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21071   Accepted: 4542 Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to…

Cable master Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 37865   Accepted: 8051 Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to…

Cable master Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 29554   Accepted: 6247 Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to…

Cable master Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21071   Accepted: 4542 Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to…