hdu1075What Are You Talking About(map容器)

题目地址

http://acm.hdu.edu.cn/showproblem.php?pid=1075

What Are You Talking About

Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 102400/204800 K (Java/Others)
Total Submission(s): 17578    Accepted Submission(s): 5725

Problem Description

Ignatius is so lucky that he met a Martian yesterday. But he didn't know the language the Martians use. The Martian gives him a history book of Mars and a dictionary when it leaves. Now Ignatius want to translate the history book into English. Can you help him?

 

Input

The problem has only one test case, the test case consists of two parts, the dictionary part and the book part. The dictionary part starts with a single line contains a string "START", this string should be ignored, then some lines follow, each line contains two strings, the first one is a word in English, the second one is the corresponding word in Martian's language. A line with a single string "END" indicates the end of the directory part, and this string should be ignored. The book part starts with a single line contains a string "START", this string should be ignored, then an article written in Martian's language. You should translate the article into English with the dictionary. If you find the word in the dictionary you should translate it and write the new word into your translation, if you can't find the word in the dictionary you do not have to translate it, and just copy the old word to your translation. Space(' '), tab('\t'), enter('\n') and all the punctuation should not be translated. A line with a single string "END" indicates the end of the book part, and that's also the end of the input. All the words are in the lowercase, and each word will contain at most 10 characters, and each line will contain at most 3000 characters.

 

Output

In this problem, you have to output the translation of the history book.

 

Sample Input

START
from fiwo
hello difh
mars riwosf
earth fnnvk
like fiiwj
END
START
difh, i'm fiwo riwosf.
i fiiwj fnnvk!
END

 

Sample Output

hello, i'm from mars.
i like earth!

Hint
Huge input, scanf is recommended.
 

 

这道题目的意思就是给你一个单词的映射，然后让你把下面给你的句子翻译一下。这道题map容器和字典树都是可以过的。map编程复杂度更低，字典树的话时间更短。

我这里是map容器的方法。好像用G++交更快一点。

#include <cstdio>
#include <cstring>
#include <cctype>
#include <map>
#include <iostream>
#include <algorithm>
using namespace std;
typedef long long ll;
string a,b;
char s[3010];
map<string,string> mp;
int main()
{
    cin>>a;
    while(cin>>a){
        if(a=="END")
            break;
        cin>>b;
        mp[b]=a;
    }
    cin>>a;
    getchar();
    while(1){
        gets(s);
        if(!strcmp(s,"END"))
            break;
        int len=strlen(s);
        a="";
        for(int i=0;i<=len-1;i++)
        {
            if(islower(s[i]))
                a+=s[i];
            else{
                if(mp.find(a)!=mp.end())
                    cout<<mp[a];
                else cout<<a;
                a="";
                cout<<s[i];
            }
        }
        cout<<endl;
    }
}