Barnicle

Barney is standing in a bar and starring at a pretty girl. He wants to shoot her with his heart arrow but he needs to know the distance between him and the girl to make his shot accurate.

Barney asked the bar tender Carl about this distance value, but Carl was so busy talking to the customers so he wrote the distance value (it's a real number) on a napkin. The problem is that he wrote it in scientific notation. The scientific notation of some real number x is the notation of form AeB, where A is a real number and B is an integer and x = A × 10B is true. In our case A is between 0 and 9 and B is non-negative.

Barney doesn't know anything about scientific notation (as well as anything scientific at all). So he asked you to tell him the distance value in usual decimal representation with minimal number of digits after the decimal point (and no decimal point if it is an integer). See the output format for better understanding.

Input

The first and only line of input contains a single string of form a.deb where a, d and b are integers and e is usual character 'e' (0 ≤ a ≤ 9, 0 ≤ d < 10100, 0 ≤ b ≤ 100) — the scientific notation of the desired distance value.

a and b contain no leading zeros and d contains no trailing zeros (but may be equal to 0). Also, b can not be non-zero if a is zero.

Output

Print the only real number x (the desired distance value) in the only line in its decimal notation.

Thus if x is an integer, print it's integer value without decimal part and decimal point and without leading zeroes.

Otherwise print x in a form of p.q such that p is an integer that have no leading zeroes (but may be equal to zero), and q is an integer that have no trailing zeroes (and may not be equal to zero).

Examples
Input
8.549e2
Output
854.9
Input
8.549e3
Output
8549
Input
0.33e0
Output
0.33
分析:注意0.0e0;
代码:
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <algorithm>
#include <climits>
#include <cstring>
#include <string>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <vector>
#include <list>
#include <ext/rope>
#define rep(i,m,n) for(i=m;i<=n;i++)
#define rsp(it,s) for(set<int>::iterator it=s.begin();it!=s.end();it++)
#define vi vector<int>
#define pii pair<int,int>
#define mod 1000000007
#define inf 0x3f3f3f3f
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ll long long
#define pi acos(-1.0)
const int maxn=1e5+;
const int dis[][]={{,},{-,},{,-},{,}};
using namespace std;
using namespace __gnu_cxx;
ll gcd(ll p,ll q){return q==?p:gcd(q,p%q);}
ll qpow(ll p,ll q){ll f=;while(q){if(q&)f=f*p;p=p*p;q>>=;}return f;}
int n,m,now,len,cnt;
string a,ans;
int main()
{
int i,j,k,t;
cin>>a;
len=a.length(); //特判;
if(a=="0.0e0")return *puts(""); //找分隔符e;
for(now=;a[now]!='e';now++); //计算进位;
for(i=now+;i<len;i++)cnt=cnt*+a[i]-'';
ans+=a[]; //进位;
for(i=;i<cnt&&a[+i]!='e';i++)ans+=a[+i],now=+i; if(i!=cnt)for(;i<cnt;i++)ans+='';//不足补0;
else
{
ans+='.'; //小数部分;
for(;a[+i]!='e';i++)ans+=a[+i],now=+i;
} //处理答案前多余0;
for(i=;ans[i]=='';i++);
if(ans[i]=='.')i--;
ans.erase(,i); //处理小数点后末尾0;
len=ans.length();
if(count(ans.begin(),ans.end(),'.')!=)
{
len=ans.length();
for(i=len-;i>=&&(ans[i]==''||ans[i]=='.');i--);
ans=ans.substr(,i+);
}
cout<<ans<<endl;
//system ("pause");
return ;
}



 

Barnicle的更多相关文章

  1. CodeForces #362 div2 B. Barnicle

    题目链接: B. Barnicle 题意:给出科学计数法 转化成十进制的整数或小数 并输出. 思路:暑假训练赛见过了,当时大腿A掉了,并表示是道水题. 刷CF再次遇见,毫不留情WA了几次.比如: 0. ...

  2. Codeforces Round #362 (Div. 2)->B. Barnicle

    B. Barnicle time limit per test 1 second memory limit per test 256 megabytes input standard input ou ...

  3. Codeforces 679B. Barnicle 模拟

    B. Barnicle time limit per test: 1 second memory limit per test :256 megabytes input: standard input ...

  4. CF-697B Barnicle与691C Exponential notation

    无聊写两个题解吧,上午做比赛拉的,感触很多! B. Barnicle time limit per test 1 second memory limit per test 256 megabytes ...

  5. 【CodeForces 697B】Barnicle

    对科学计数法表示的数,输出其10进制的形式. c++来做,需要考虑这些细节: 当b==0,d==0时,只输出a. 当不需要补零的情况有两种: 一种是刚好是整数,只输出a(注意1.0e1的情况是输出1) ...

  6. codeforces 697B Barnicle

    题目链接:http://codeforces.com/problemset/problem/697/B 题目大意: 将科学计数法用十进制表示.[如果类似于7.0应输出7] 解题思路: Java 中 B ...

  7. CodeForces 697B Barnicle 模拟

    强行模拟 纪念一下…… #include<stdio.h> #include<iostream> #include<algorithm> #include<m ...

  8. Codeforces Round #362 (Div. 2) A.B.C

    A. Pineapple Incident time limit per test 1 second memory limit per test 256 megabytes input standar ...

  9. Codeforces Round #362

    A - Pineapple Incident #pragma comment(linker, "/STACK:102c000000,102c000000") #include &l ...

随机推荐

  1. mysql之TIMESTAMP(时间戳)用法详解 [http://www.jb51.net/article/51794.htm]

    一.TIMESTAMP的变体 TIMESTAMP时间戳在创建的时候可以有多重不同的特性,如: 1.在创建新记录和修改现有记录的时候都对这个数据列刷新: TIMESTAMP DEFAULT CURREN ...

  2. 东芝MIPI解码TC358746AXBG和OV6211使用及配置

    Camera Sensor常见的接口类型: 1.有并口信号(D0~D7.PCLK.HSYNC.VSYNC),一般的处理器有DCMI接口,如ST32F207x系列,直接相连就可以使用. 2.MIPI接口 ...

  3. python 输出重定向

    使print既打印到终端,又写入文件 class Tee(object): def __init__(self,*files): self.files = files def write(self,o ...

  4. hdu_1950_Bridging signals(LIS)

    题目连接:http://acm.hdu.edu.cn/showproblem.php?pid=1950 题意:实际就是求最长递增子序列 题解:有两种解法,一种是利用二分,一种是用线段树 这个是这题的二 ...

  5. 有了SSL证书,如何在IIS环境下部署https?【转载】

    昨天各位小伙伴都很开心的领取了自己的SSL证书,但是大部分小伙伴却不知道如何部署,也许是因为第一次接触SSL这种高端的东西吧,不过个人觉得就是懒懒懒...本来小编也挺懒的,但是答应了各位小伙伴的,那么 ...

  6. 全选js实现

    前端全选框 <input type='checkbox' name='allSelect' onclick='sel(this)'></input> //有i个选择框 < ...

  7. Android onTouchEvent方法

    onTouchEvent方法简介 前面已经介绍了手机键盘事件的处理方法,接下来将介绍手机屏幕事件的处理方法onTouchEvent.该方法在View类中的定义,并且所有的View子类全部重写了该方法, ...

  8. webwork <ww:if> 标签的使用

    如果在前台(JSP)取出后台的对象的属性,这个属性在后台是属于String 类型的,但若这个属性的值为数字,取出在前台就会默认为整形的值,所以在<ww:if> 判断里面不能加引号:< ...

  9. 修改apache配置文件去除thinkphp url中的index.php

    例如你的原路径是 http://localhost/test/index.php/index/add那么现在的地址是 http://localhost/test/index/add如何去掉index. ...

  10. Java Networking Related (Java Examples in a Nutshell 3rd Edition)

    Examples to: Use URL class to parse URLs and download the network resources specified by a URL Use U ...