PAT 1026. Table Tennis

A table tennis club has N tables available to the public.  The tables are numbered from 1 to N.  For any pair of players, if there are some tables open when they arrive, they will be assigned to the available table with the smallest number.  If all the tables are occupied, they will have to wait in a queue.  It is assumed that every pair of players can play for at most 2 hours.

Your job is to count for everyone in queue their waiting time, and for each table the number of players it has served for the day.

One thing that makes this procedure a bit complicated is that the club reserves some tables for their VIP members.  When a VIP table is open, the first VIP pair in the queue will have the priviledge to take it.  However, if there is no VIP in the queue, the next pair of players can take it.  On the other hand, if when it is the turn of a VIP pair, yet no VIP table is available, they can be assigned as any ordinary players.

Input Specification:

Each input file contains one test case. For each case, the first line contains an integer N (<=10000) - the total number of pairs of players.  Then N lines follow, each contains 2 times and a VIP tag: HH:MM:SS - the arriving time, P - the playing time in minutes of a pair of players, and tag - which is 1 if they hold a VIP card, or 0 if not.  It is guaranteed that the arriving time is between 08:00:00 and 21:00:00 while the club is open.  It is assumed that no two customers arrives at the same time.  Following the players' info, there are 2 positive integers: K (<=100) - the number of tables, and M (< K) - the number of VIP tables.  The last line contains M table numbers.

Output Specification:

For each test case, first print the arriving time, serving time and the waiting time for each pair of players in the format shown by the sample.  Then print in a line the number of players served by each table.  Notice that the output must be listed in chronological order of the serving time.  The waiting time must be rounded up to an integer minute(s).  If one cannot get a table before the closing time, their information must NOT be printed.

Sample Input:

9
20:52:00 10 0
08:00:00 20 0
08:02:00 30 0
20:51:00 10 0
08:10:00 5 0
08:12:00 10 1
20:50:00 10 0
08:01:30 15 1
20:53:00 10 1
3 1
2

Sample Output:

08:00:00 08:00:00 0
08:01:30 08:01:30 0
08:02:00 08:02:00 0
08:12:00 08:16:30 5
08:10:00 08:20:00 10
20:50:00 20:50:00 0
20:51:00 20:51:00 0
20:52:00 20:52:00 0
3 3 2


此题很遗憾，之拿到23分，但是觉得很有成就感

// 1026pat.cpp : 定义控制台应用程序的入口点。
//

#include <fstream>
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <time.h>
#include <math.h>
using namespace std;

const int NP=10001;
const int NT=101;
const int INF=0x7fffffff;
const int closeTime=21*3600;

struct Player
{
    string arrive_time;   //arrive time in string format
    string serve_time;    //serve time in string format
    int serve_second;     //serve time int seconds of integer
    int arrive_second;    //arrive time in seconds of integer
    int play_time;        //play time in minutes
    int play_second;      //play time in seconds
    int wait_time;        //wait time 
    bool VIP;             //Vip 
    bool operator<(const Player& rhs) const
    {
        return arrive_time<rhs.arrive_time;
    }
};

struct Table
{
    int serve_nums;
    int next_available_time;
    bool VIPT;
};

vector<Player> players;
vector<Player> RecordPlayers;
vector<Table> tables;
vector<int> vipTables;

int n,k,m;;

int find_available_table(int arrive_time)
{
    for(int i=1;i<=k;++i)
    {
        if(tables[i].next_available_time<=arrive_time)
            return i;
    }
    return -1;
}

int find_earlist_table()
{
    int min=INF;
    int table;
    for(int i=1;i<=k;++i)
    {
        if(tables[i].next_available_time<min)
        {
            min=tables[i].next_available_time;
            table=i;
        }
    }
    return table;
}

bool isVipTable(int x)
{
    for(int i=0;i<m;++i)
    {
        if(vipTables[i]==x)
            return true;
    }
    return false;
}

bool isVipPlayer(const Player& player)
{
    if(player.VIP)
        return true;
    else
        return false;
}

int findVip_available_table(int arrive_second)
{
    for(int i=0;i<m;++i)
    {
        if(tables[vipTables[i]].next_available_time<=arrive_second)
            return vipTables[i];
    }
    return -1;
}

int findVip_player_Inqueue(int cur,int available_time)
{
    for(int i=cur+1;i<n;++i)
    {
        if(players[i].VIP&&players[i].arrive_second<=available_time)
            return i;
    }
    return -1;
}

class T:public binary_function<Player,Player,bool>
{
public:
    bool operator()(const Player& lhs,const Player& rhs) const
    { 
        return lhs.serve_time<rhs.serve_time;
    }
};
int _tmain(int argc, _TCHAR* argv[])
{while(cin>>n)
    {
        //clear the buffer
        players.clear();
        tables.clear();
        vipTables.clear();
        Player player;
        int h,min,s;
        for(int i=1;i<=n;++i)
        {
            cin>>player.arrive_time>>player.play_time>>player.VIP;
            sscanf(player.arrive_time.c_str(),"%d:%d:%d",&h,&min,&s);
            player.arrive_second=3600*h+60*min+s;
            if(player.play_time>120)
                player.play_time=120;
            player.play_second=60*player.play_time;
            player.wait_time=0;
            players.push_back(player);
        }
        sort(players.begin(),players.end());
        cin>>k>>m;
        Table table;
        table.VIPT=0;
        tables.push_back(table);
        for(int i=1;i<=k;++i)
        {
            table.next_available_time=8*3600;
            table.VIPT=0;
            table.serve_nums=0;
            tables.push_back(table);
        }
        int vip;
        for(int i=1;i<=m;++i)
        {
            cin>>vip;
            vipTables.push_back(vip);
            tables[vip].VIPT=1;
        }

        //deal with the core  process
        int tnum;
        bool nvip=false;
        for(int i=0;i<n;++i)
        {
            if(players[i].VIP)//vip player case
            {
                tnum=findVip_available_table(players[i].arrive_second);
                if(tnum>0)//vip player vip table
                {
                    if(tables[tnum].next_available_time<closeTime)
                    {
                        ++tables[tnum].serve_nums;
                        players[i].serve_second=players[i].arrive_second;
                        tables[tnum].next_available_time=players[i].arrive_second+players[i].play_second;
                        RecordPlayers.push_back(players[i]);
                    }
                    else
                        nvip=true;
                }//vip player vip table
                else
                {
                    tnum=find_available_table(players[i].arrive_second);
                    if(tnum>0)
                    {
                        if(tables[tnum].next_available_time<closeTime)
                        {
                            ++tables[tnum].serve_nums;
                            players[i].serve_second=players[i].arrive_second;
                            tables[tnum].next_available_time=players[i].arrive_second+players[i].play_second;
                            RecordPlayers.push_back(players[i]);
                        }
                        else    
                        {
                            if(nvip)
                                break;
                        }

                    }//vip player common table
                    else
                    {
                        tnum=find_earlist_table();
                        if(tables[tnum].next_available_time<closeTime)
                        {
                            ++tables[tnum].serve_nums;
                            players[i].serve_second=tables[tnum].next_available_time;
                            players[i].wait_time=tables[tnum].next_available_time-players[i].arrive_second;
                            tables[tnum].next_available_time=tables[tnum].next_available_time+players[i].play_second;
                            RecordPlayers.push_back(players[i]);
                        }
                        else
                            break;
                    }//vip player have to wait 
                }
            }//vip player case
            else  //common player case
            {
                tnum=find_available_table(players[i].arrive_second);
                if(tnum>0)
                {
                    if(tables[tnum].next_available_time<closeTime)
                    {
                        ++tables[tnum].serve_nums;
                        players[i].serve_second=players[i].arrive_second;
                        tables[tnum].next_available_time=players[i].arrive_second+players[i].play_second;
                        RecordPlayers.push_back(players[i]);
                    }
                    else
                        break;
                }//available table
                else
                {
                    tnum=find_earlist_table();
                    if(tables[tnum].next_available_time<closeTime)
                    {
                        int vp=findVip_player_Inqueue(i,tables[tnum].next_available_time);
                        if(vp>-1)
                        {
                            ++tables[tnum].serve_nums;
                            players[vp].serve_second=tables[tnum].next_available_time;
                            players[vp].wait_time=tables[tnum].next_available_time-players[vp].arrive_second;
                            tables[tnum].next_available_time+=players[vp].play_second;
                            RecordPlayers.push_back(players[vp]);
                            players.erase(players.begin()+vp);
                            --i;
                            --n;
                            continue;
                        }
                        else
                        {
                            ++tables[tnum].serve_nums;
                            players[i].serve_second=tables[tnum].next_available_time;
                            players[i].wait_time=tables[tnum].next_available_time-players[i].arrive_second;
                            tables[tnum].next_available_time+=players[i].play_second;
                            RecordPlayers.push_back(players[i]);
                        }
                    }
                    else
                        break;
                }//common player have to wait
            }//common player case
        }//the core calculation process

        //output the result
        for(vector<Player>::iterator iter=RecordPlayers.begin();iter!=RecordPlayers.end();++iter)
        {
            int hr,me,sd;
            hr=iter->serve_second/3600;
            me=(iter->serve_second/60)%60;
            sd=iter->serve_second%60;
            char tmp[10];
            tm hms;
            hms.tm_hour=hr;
            hms.tm_min=me;
            hms.tm_sec=sd;
            strftime(tmp,sizeof(tmp),"%H:%M:%S",&hms);
            iter->serve_time=tmp;
            iter->wait_time=(1.0*iter->wait_time/60.0+0.5);
        }
        sort(RecordPlayers.begin(),RecordPlayers.end(),T());
        for(vector<Player>::iterator iter=RecordPlayers.begin();iter!=RecordPlayers.end();++iter)
        {
            cout<<iter->arrive_time<<" "<<iter->serve_time<<" "<<iter->wait_time<<endl;
        }
        bool flag=true;
        for(vector<Table>::iterator iter=tables.begin()+1;iter!=tables.end();++iter)
        {
            if(flag)
            {
                cout<<iter->serve_nums;
                flag=false;
            }
            else
                cout<<" "<<iter->serve_nums;
        }
        cout<<endl;
    }
    return 0;
}