Hardwood Species
来源:互联网 发布:数控编程60度倒角公式 编辑:程序博客网 时间:2024/06/06 05:47
C - Hardwood Species
Time Limit:10000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64uDescription
Hardwoods are the botanical group of trees that have broad leaves, produce a fruit or nut, and generally go dormant in the winter.
America's temperate climates produce forests with hundreds of hardwood species -- trees that share certain biological characteristics. Although oak, maple and cherry all are types of hardwood trees, for example, they are different species. Together, all the hardwood species represent 40 percent of the trees in the United States.
On the other hand, softwoods, or conifers, from the Latin word meaning "cone-bearing," have needles. Widely available US softwoods include cedar, fir, hemlock, pine, redwood, spruce and cypress. In a home, the softwoods are used primarily as structural lumber such as 2x4s and 2x6s, with some limited decorative applications.
Using satellite imaging technology, the Department of Natural Resources has compiled an inventory of every tree standing on a particular day. You are to compute the total fraction of the tree population represented by each species.
America's temperate climates produce forests with hundreds of hardwood species -- trees that share certain biological characteristics. Although oak, maple and cherry all are types of hardwood trees, for example, they are different species. Together, all the hardwood species represent 40 percent of the trees in the United States.
On the other hand, softwoods, or conifers, from the Latin word meaning "cone-bearing," have needles. Widely available US softwoods include cedar, fir, hemlock, pine, redwood, spruce and cypress. In a home, the softwoods are used primarily as structural lumber such as 2x4s and 2x6s, with some limited decorative applications.
Using satellite imaging technology, the Department of Natural Resources has compiled an inventory of every tree standing on a particular day. You are to compute the total fraction of the tree population represented by each species.
Input
Input to your program consists of a list of the species of every tree observed by the satellite; one tree per line. No species name exceeds 30 characters. There are no more than 10,000 species and no more than 1,000,000 trees.
Output
Print the name of each species represented in the population, in alphabetical order, followed by the percentage of the population it represents, to 4 decimal places.
Sample Input
Red AlderAshAspenBasswoodAshBeechYellow BirchAshCherryCottonwoodAshCypressRed ElmGumHackberryWhite OakHickoryPecanHard MapleWhite OakSoft MapleRed OakRed OakWhite OakPoplanSassafrasSycamoreBlack WalnutWillow
Sample Output
Ash 13.7931Aspen 3.4483Basswood 3.4483Beech 3.4483Black Walnut 3.4483Cherry 3.4483Cottonwood 3.4483Cypress 3.4483Gum 3.4483Hackberry 3.4483Hard Maple 3.4483Hickory 3.4483Pecan 3.4483Poplan 3.4483Red Alder 3.4483Red Elm 3.4483Red Oak 6.8966Sassafras 3.4483Soft Maple 3.4483Sycamore 3.4483White Oak 10.3448Willow 3.4483Yellow Birch 3.4483
这个题刚学会了set马上就来显摆一下了。咳咳set就是集合的意思,里面不会有重复元素,然后结合MAP几行代码就可以解决了~
#include <iostream>#include <cstdio>#include <string>#include <map>#include <set>using namespace std;map<string,int>h;set<string>name;int main(){ string s; int sum=0; while(getline(cin,s)) { h[s]++; name.insert(s); sum++; } for(set<string>::iterator it=name.begin();it!=name.end();++it) { cout<<*it<<" "; printf("%.4lf\n",h[*it]*100.0/sum); } return 0;}
0 0
- Hardwood Species
- Hardwood Species
- Hardwood Species
- Hardwood Species
- Hardwood Species
- Hardwood Species
- Hardwood Species
- Hardwood Species
- Hardwood Species
- fjnu 1601 Hardwood Species
- PKU2418 Hardwood Species
- poj 2418 Hardwood Species
- POJ 2418 Hardwood Species
- [poj2418]Hardwood Species
- 2418 Hardwood Species
- poj 2418Hardwood Species
- POJ 2418 Hardwood Species
- poj 2418 Hardwood Species
- Apache POI的小测试
- 开通博客啦!~
- L1-029. 是不是太胖了-PAT团体程序设计天梯赛GPLT
- HDU 2016 Multi-University Training Contest 2 1001
- 今日再发
- Hardwood Species
- 模块化开发一个电子商务网站
- 使用Eclipse进行Java Web项目开发注意事项-Tomcat配置
- 5-33 有理数加法 (15分)
- L1-028. 判断素数-PAT团体程序设计天梯赛GPLT
- centos7上memcahed安装
- 利用泛型封装BaseDao(项目中直接调用即可)
- Java_IO_实例总结(二)
- R语言使用协同过滤算法(usercf)解决投资推荐问题