YTU-OJ-Problem E: AB编程题--世界杯小组赛

Problem E: AB编程题--世界杯小组赛

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 85  Solved: 25
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Description

注：本题目自由设计，但必须使用类进行代码设计。

世界杯32支参赛队分为八个小组,每个小组分别有四支球队进行比赛，每支球队都必须和其他三支球队进行且只进行一场比赛,每组4个队循环比赛，共打6场(a1-a2;a1-a3;a1-a4;a2-a3;a2-a4;a3-a4),每场比赛90分钟，胜平负分别积3、1、0分。每个小组积分的前两名球队出线进入淘汰赛阶段的1/8决赛，共16支队，即“16强”。

每个小组分别有四只球队，其排名按以下规则确定：
a、积分高者排名靠前
b、小组中总净胜球高者排名靠前
c、小组中总进球数高者排名靠前
d、不能确定
净胜球数是指进球数（正数）与失球数（正数）的差。
如，红队胜黄队4：2，蓝队胜黄队3：1，红队负蓝队2：3
红队进6球，失5球，净胜球数为：6-5=1
黄队进3球，失7球，净胜球数为：3-7=-4
蓝队进6球，失3球，净胜球数为：6-3=3
//以下是可供参考的代码
#include <stdio.h>
#include <iostream>
#include <string>
using namespace std;

class FootballGroup
{
private:
    int score[4]; //总积分
    int goaldiff[4]; //总净胜球
    int totalgoals[4]; //总进球数
    string teamname[4] ; //球队的名称
public:
    FootballGroup()
    {
        for(int i=0; i<4; i++)
        {
            score[i]=goaldiff[i]=totalgoals[i]=0;
        }
    }
    void setTeamName(int teamindex,string name)  //设置第teamindex+1个队的队名
    {
        teamname[teamindex] = name;
    }
    void addMatchresult(int teamindex1,int teamindex2,int score1,int score2);
    void showResult();
};
int main()
{
    FootballGroup GroupA;
    string name;
    int i,j;
    for(i=0; i<4; i++)
    {
        cin>>name;
        GroupA.setTeamName(i,name); //球队a1,a2,a3,a4的名称
    }
    int score1,score2;
    for(i=0; i<3; i++) //a1-a2;a1-a3;a1-a4;a2-a3;a2-a4;a3-a4
        for(j=i+1; j<4; j++)
        {
            cin>>score1>>score2; //两队的比分
            GroupA.addMatchresult(i,j,score1,score2);
        }
    GroupA.showResult();
    return 0;
}

Input

第一行 4个参赛队伍的名称
第二行开始到第七行，6场比赛的比分(a1-a2;a1-a3;a1-a4;a2-a3;a2-a4;a3-a4)

Output

进入淘汰赛阶段的两只球队，如果不能确定，则输出"NO"

Sample Input

a1 a2 a3 a41 20 02 33 12 21 2

Sample Output

a2 a4

HINT

#include <stdio.h>#include <iostream>#include <string>using namespace std;class FootballGroup{private:    int score[4]; //总积分    int goaldiff[4]; //总净胜球    int totalgoals[4]; //总进球数    string teamname[4] ; //球队的名称public:    FootballGroup()    {        for(int i=0; i<4; i++)        {            score[i]=goaldiff[i]=totalgoals[i]=0;        }    }    void swap(int *s,int *ss,int *g,int *gg,int *t,int *tt,string *n,string *nn)    {        int m;        string str;        m=*s;        *s=*ss;        *ss=m;        m=*g;        *g=*gg;        *gg=m;        m=*t;        *t=*tt;        *tt=m;        str=*n;        *n=*nn;        *nn=str;    }    void setTeamName(int teamindex,string name)  //设置第teamindex+1个队的队名    {        teamname[teamindex] = name;    }    void addMatchresult(int teamindex1,int teamindex2,int score1,int score2)    {        totalgoals[teamindex1]+=score1;        totalgoals[teamindex2]+=score2;        if(score1>score2)        {            goaldiff[teamindex1]+=(score1-score2);            score[teamindex1]+=3;        }        else if(score1<score2)        {            goaldiff[teamindex2]+=(score2-score1);            score[teamindex2]+=3;        }        else        {            score[teamindex1]+=1;            score[teamindex2]+=1;        }    }    void showResult()    {        int i,j;        for(i=0; i<3; i++)            for(j=i+1; j<4; j++)                if(score[j]>score[i])                    swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);        if(score[1]!=score[2])            cout<<teamname[0]<<" "<<teamname[1]<<endl;        else if (score[0]!=score[1]&&score[1]==score[2]&&score[2]!=score[3])        {            for(i=1; i<2; i++)                for(j=i+1; j<3; j++)                {                    if(goaldiff[j]>goaldiff[i])                        swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                }            if (goaldiff[1]!=goaldiff[2])            {                cout<<teamname[0]<<" "<<teamname[1]<<endl;            }            else            {                if (totalgoals[1]>totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else if(totalgoals[1]<totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[2]<<endl;                else                    cout<<"NO"<<endl;            }        }        else if (score[0]!=score[1]&&score[1]==score[2]&&score[2]==score[3])        {            for(i=1; i<3; i++)                for(j=i+1; j<4; j++)                {                    if(goaldiff[j]>goaldiff[i])                        swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                }            if (goaldiff[1]!=goaldiff[2])            {                cout<<teamname[0]<<" "<<teamname[1]<<endl;            }            else if (goaldiff[1]==goaldiff[2]&&goaldiff[2]!=goaldiff[3])            {                if (totalgoals[1]>totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else if(totalgoals[1]<totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[2]<<endl;                else                    cout<<"NO"<<endl;            }            else if (goaldiff[1]==goaldiff[2]&&goaldiff[2]==goaldiff[3])            {                for(i=1; i<3; i++)                    for(j=i+1; j<4; j++)                    {                        if(totalgoals[j]>totalgoals[i])                            swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                    }                if (totalgoals[1]!=totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else                    cout<<"NO"<<endl;            }        }        else if(score[1]==score[2]&&score[0]==score[1]&&score[2]==score[3])        {            for(i=0; i<3; i++)                for(j=i+1; j<4; j++)                {                    if(goaldiff[j]>goaldiff[i])                        swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                }            if(goaldiff[1]!=goaldiff[2])            {                cout<<teamname[0]<<" "<<teamname[1]<<endl;            }            else if (goaldiff[0]!=goaldiff[1]&&goaldiff[1]==goaldiff[2]&&goaldiff[2]!=goaldiff[3])            {                if (totalgoals[1]>totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else if(totalgoals[1]<totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[2]<<endl;                else                    cout<<"NO"<<endl;            }            else if (goaldiff[0]!=goaldiff[1]&&goaldiff[1]==goaldiff[2]&&goaldiff[2]==goaldiff[3])            {                for(i=1; i<3; i++)                    for(j=i+1; j<4; j++)                    {                        if(totalgoals[j]>totalgoals[i])                            swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                    }                if (totalgoals[1]!=totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else                    cout<<"NO"<<endl;            }            else if(goaldiff[0]==goaldiff[1]&&goaldiff[1]==goaldiff[2]&&goaldiff[2]!=goaldiff[3])            {                for(i=0; i<2; i++)                    for(j=i+1; j<3; j++)                    {                        if(totalgoals[j]>totalgoals[i])                            swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                    }                if(totalgoals[0]!=totalgoals[1]&&totalgoals[1]!=totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else                    cout<<"NO"<<endl;            }            else if(goaldiff[0]==goaldiff[1]&&goaldiff[1]==goaldiff[2]&&goaldiff[2]==goaldiff[3])            {                for(i=0; i<3; i++)                    for(j=i+1; j<4; j++)                    {                        if(totalgoals[j]>totalgoals[i])                            swap(&score[i],&score[j],&goaldiff[i],&goaldiff[j],&totalgoals[i],&totalgoals[j],&teamname[i],&teamname[j]);                    }                if(totalgoals[1]!=totalgoals[2])                    cout<<teamname[0]<<" "<<teamname[1]<<endl;                else                    cout<<"NO"<<endl;            }        }    }};int main(){    FootballGroup GroupA;    string name;    int i,j;    for(i=0; i<4; i++)    {        cin>>name;        GroupA.setTeamName(i,name); //球队a1,a2,a3,a4的名称    }    int score1,score2;    for(i=0; i<3; i++) //a1-a2;a1-a3;a1-a4;a2-a3;a2-a4;a3-a4        for(j=i+1; j<4; j++)        {            cin>>score1>>score2; //两队的比分            GroupA.addMatchresult(i,j,score1,score2);        }    GroupA.showResult();    return 0;}