HDU What Are You Talking About

Time Limit : 10000/5000ms (Java/Other)   Memory Limit : 102400/204800K (Java/Other)

Total Submission(s) : 13   Accepted Submission(s) : 8

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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

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.

Author

Ignatius.L

 

 该代码存在问题，如果只输入 r 这个字符，则问题就出来了

 

 

#include<iostream>
#include<cstdio>
#include<cstring>

using namespace std;

struct Trie{
    char wrd[20];
    int flag;
    Trie *next[26];
    Trie(){
        for(int i=0;i<26;i++)
            next[i]=NULL;
        flag=0;
    }
};

Trie *root;

char s[3100];

void InsertTrie(char *str,char *wrd){
    Trie *loc=root,*tmp;
    for(int i=0;str[i]!='\0';i++){
        int id=str[i]-'a';
        if(loc->next[id]==NULL){
            tmp=new Trie();
            loc->next[id]=tmp;
        }
        loc=loc->next[id];
    }
    loc->flag=1;
    strcpy(loc->wrd,wrd);
}

int SearchTrie(char *str,char *wrd){
    Trie *loc=root;
    for(int i=0;str[i]!='\0';i++){
        int id=str[i]-'a';
        if(loc->next[id]!=NULL)
            loc=loc->next[id];
        else
            return 0;
    }
    if(loc->flag){
        strcpy(wrd,loc->wrd);
        return 1;
    }
    return 0;
}

void release(Trie *rt){
    if(rt==NULL)
        return ;
    for(int i=0;i<26;i++)
        if(rt->next[i]!=NULL)
            release(rt->next[i]);
    delete rt;
    rt=NULL;
}

int main(){

    //freopen("input.txt","r",stdin);

    root=new Trie();
    char str[20],wrd[20];
    gets(s);
    while(gets(s) && s[0]!='E'){
        sscanf(s,"%s%s",wrd,str);
        InsertTrie(str,wrd);
    }
    gets(s);
    int cnt,len;
    while(gets(s) && s[0]!='E'){
        len=strlen(s);
        cnt=0;
        for(int i=0;i<len;i++){
            if(s[i]>='a' && s[i]<='z')
                str[cnt++]=s[i];
            else{
                str[cnt]='\0';
                if(cnt>0){
                    if(SearchTrie(str,wrd))
                        printf("%s",wrd);
                    else
                        printf("%s",str);
                }
                printf("%c",s[i]);
                cnt=0;
            }
        }
        str[cnt]='\0';
        if(cnt>0){
            if(SearchTrie(str,wrd))
                printf("%s",wrd);
            else
                printf("%s",str);
        }
        printf("\n");
    }
    //release(root);  空间够用就别加，还浪费时间
    return 0;
}

 

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