trie 树 模板

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <cmath>
using namespace std;
const int MAXN=5e6+5;
int nume,n,m;
char s[55],fff[4][20]={" ","OK","WRONG","REPEAT"};
struct node{
    int cnt,child[26];
    bool end,vis;
}trie[MAXN];
void ins(){
    int u=0,len=strlen(s);
    for(int i=0;i<len;i++){
        int v=s[i]-'a';
        if(!trie[u].child[v]) trie[u].child[v]=++nume;
        u=trie[u].child[v];
        trie[u].cnt++;
    }
    trie[u].end=1;
}
int query(){
    int len=strlen(s),u=0;
    for(int i=0;i<len;i++){
        int v=s[i]-'a';
        if(!trie[u].child[v]) return 2;
        u=trie[u].child[v];
    }
    if(!trie[u].end) return 2;
    if(trie[u].vis) return 3;
    trie[u].vis=1;
    return 1;
}
int init(){
    int rv=0,fh=1;
    char c=getchar();
    while(c<'0'||c>'9'){
        if(c=='-') fh=-1;
        c=getchar();
    }
    while(c>='0'&&c<='9'){
        rv=(rv<<1)+(rv<<3)+c-'0';
        c=getchar();
    }
    return fh*rv;
}
int main(){
    freopen("in.txt","r",stdin);
    n=init();
    for(int i=1;i<=n;i++) {
        scanf("%s",s);
        ins();
    }
    m=init();
    for(int i=1;i<=m;i++){
        scanf("%s",s);
        printf("%s\n",fff[query()]);
    }
    fclose(stdin);
    return 0;
}