poj 3283 Card Hands

#include <cstdio>
#include <sstream>
#include <fstream>
#include <cstring>
#include <iostream>
#include <algorithm>
#include <map>
#include <cctype>
#include <ctime>
#include <set>
#include <climits>
#include <vector>
#include <queue>
#include <stack>
#include <cstdlib>
#include <cmath>
#include <string>
#include <list>

#define INPUT_FILE "in.txt"
#define OUTPUT_FILE "out.txt"

using namespace std;

typedef long long LL;
const int INF = INT_MAX / 2;

void setfile() {
    freopen(INPUT_FILE,"r",stdin);
    freopen(OUTPUT_FILE,"w",stdout);
}

const int sigma_size = 134;

inline int tail_idx(char c) {
    switch(c) {
        case ‘C‘: return 0;
        case ‘D‘: return 1;
        case ‘H‘: return 2;
        case ‘S‘: return 3;
    }
    return 0;
}

inline int idx(char *str) {
    int len = strlen(str);
    if(len == 3) return 100 + tail_idx(str[2]);
    int ans = 0,pre = -1;
    char cpre;
    sscanf(str,"%d",&pre);
    if(pre != -1) return pre * 10 + tail_idx(str[1]);
    sscanf(str,"%c",&cpre);
    switch(cpre) {
        case ‘A‘: ans = 1; break;
        case ‘J‘: ans = 11; break;
        case ‘Q‘: ans = 12; break;
        case ‘K‘: ans = 13; break;
    }
    return ans * 10 + tail_idx(str[1]);
}

const int maxn = 100005;

struct Trie {
    int next[sigma_size];
} node[maxn];

char buf[maxn],now[15];
int sz;

void init() {
    sz = 1;
    memset(&node[0],0,sizeof(node));
}

void insert() {
    int len = strlen(buf);
    int pos = len - 1,u = 0;
    while(buf[pos] == ‘ ‘) pos--;
    while(buf[pos] != ‘ ‘ && pos >= 0) pos--;
    while(pos >= 0) {
        sscanf(buf + pos,"%s",now);
        int c = idx(now);
        if(node[u].next[c] == 0) {
            memset(&node[sz],0,sizeof(Trie));
            node[u].next[c] = sz;
            sz++;
        }
        pos--;
        while(buf[pos] != ‘ ‘ && pos >= 0) pos--;
        u = node[u].next[c];
    }
}

int main() {
    int n;
    while(scanf("%d",&n),n) {
        init();
        for(int i = 0;i < n;i++) {
            int ll; scanf("%d",&ll);
            gets(buf);
            insert();
        }
        printf("%d\n",sz - 1);
    }
    return 0;
}