hoj 3029 Dictionary 模拟队列

/*

题目:
    XML有缩进,并且会在之前的缩进基础上缩进几个空格,现在问缩进k个空格的标签

分析:
    模拟队列,及时更新空格即可



*/
#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>

using namespace std;

const int X = 20005;

int n,k;
char s[105];
char p[105];
vector<int> vec[X];

struct node
{
    char s[105];
    int num;
}q[X],ans[X];

int top,ret;

void check()
{
    if(s[0]!='<')
        return;
    if(s[1]=='/')
    {
        top--;
        return;
    }
    else
    {
        int temp = 0;
        int cnt = 0;
        bool ok = false;;
        for(int i=1;s[i];i++)
        {
            if(ok)
            {
                if(s[i]=='>')
                    break;
                temp = temp*10+s[i]-'0';
            }
            else if(s[i]!=',')
                p[cnt++] = s[i];
            if(s[i]==',')
            {
                p[cnt] = '\0';
                ok = true;
            }
        }
        if(top)
            q[top].num = q[top-1].num+temp;
        else
            q[top].num = temp;
        strcpy(q[top].s,p);
        strcpy(ans[ret].s,p);
        ans[ret].num = q[top].num;
        vec[ans[ret].num].push_back(ret);
        ret++;
        top++;
    }
}

int main()
{
    freopen("sum.in","r",stdin);
    while(scanf("%d%d ",&n,&k)!=EOF)
    {
        for(int i=0;i<n;i++)
            vec[i].clear();
        top = 0;
        ret = 0;
        for(int i=0;i<n;i++)
        {
            gets(s);
            check();
        }
        int len = vec[k].size();
        int x;
        cout<<len<<endl;
        for(int i=0;i<len;i++)
        {
            x = vec[k][i];
            printf("%s\n",ans[x].s);
        }
    }
    return 0;
}
posted @ 2012-07-25 12:48  yejinru  阅读(202)  评论(0编辑  收藏  举报