CCF-20180903 元素选择器

题意： 找出给定html文档的对应元素所在位置。
分析： 字符串问题大模拟， CCF经典题。
代码： 这道题只得了80分， 还在找bug。

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 111;
struct Item //html文档
{
    int dot;
    string text;
    string id;
} item[MAXN];

int fa[MAXN]; //当前元素的父亲元素所在位置

struct Option //操作
{
    int len, id;
    string op[11];
} option[MAXN];

string arr[MAXN];
vector<int> vi[MAXN]; //保存结果

int main ()
{
    int n, m;
    cin >> n >> m;
    getchar();
    for (int i = 0; i < n; i++)
    {
        getline(cin, arr[i]);
    }

    //solve
	//预处理HTML文档
    memset (fa, -1, sizeof (fa));    
    for (int i = 0; i < n; i++)
    {
        int dot = 0;
        string tmp = "";
        string tmpid = "";
        bool flag = true;
        for (int j = 0; j < arr[i].length (); j++)
        {
            if (arr[i][j] == '.')
            {
                dot++;
                continue;
            }
            if (arr[i][j] == ' ')
            {
                flag = false;
                continue;
            }
            if (flag)
                tmp += arr[i][j];
            else
                tmpid += arr[i][j];
        }
        item[i].text = tmp;
        item[i].id = tmpid;
        item[i].dot = dot;
        for (int k = 0; k < item[i].text.length(); k++)
        {
            if (isupper(item[i].text[k])) item[i].text[k] = tolower(item[i].text[k]);
        }
        for (int j = i; j >= 0; j--)
        {
            if (item[i].dot == item[j].dot + 2)
            {
                fa[i] = j;
                break;
            }
        }
    }

    /*
    for (int i = 0; i < n; i++)
    {
        cout <<fa[i] << " " << item[i].dot << " " << item[i].text << " " << item[i].id << endl;
    }
    */
    //预处理操作
    for (int i = 0; i < m; i++)
    {
        int sz = 0;
        string s;
        getline (cin, s);
        string tmp = "";
        for (int j = 0; j < s.length (); j++)
        {
            if (s[j] == ' ')
            {
                option[i].op[sz] = tmp;
                sz++;
                tmp = "";
            } else 
            {
                tmp += s[j];
            }
        }
        option[i].op[sz] = tmp;
        option[i].len = sz;    
        option[i].id = i;
    }
    for (int i = 0; i < m; i++)
    {
            for (int j = 0; j <= option[i].len; j++)
            {
                if (option[i].op[j][0] != '#')
                {
                    for (int k = 0; k < option[i].op[j].length(); k++)
                    {
                        if (isupper(option[i].op[j][k])) option[i].op[j][k] = tolower(option[i].op[j][k]);
                    }
                }
            }
    }
    /*
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j <= option[i].len; j++)
        {
            cout << option[i].op[j] << " ";
        }
        cout << endl;
    }
    */

	//查找匹配
    for (int k = 0; k < m; k++){
        int sz = option[k].len;
        for (int i = 0; i < n; i++)
        {
            int j1, j2;
            for (j1 = i, j2 = sz; j1 != -1&&j2 >= 0; j1 = fa[j1], j2--)
            {

               // cout <<j1 << " " << j2 <<" "<<  option[k].op[j2] << " " << item[j1].text << " " << item[j1].id << endl;
                if (option[k].op[j2].compare(item[j1].text) == 0 || option[k].op[j2].compare(item[j1].id) == 0)
                {
                } 
                else 
                {
                    break;
                }
            }
            if (j2 == -1)
            {
                vi[k].push_back(i + 1);                    
            }
        }
    }

    for (int i = 0; i < m; i++)
    {
        cout << vi[i].size();
        for (int j = 0; j < vi[i].size(); ++j)
        {
            cout << " " << vi[i][j];
        }
        cout << endl;
    }
    return 0;
}