題意

有一副撲克，四個人玩遊戲，每個人一開始有13張牌。每個人有各自的策略，問這個遊戲結束後每個人手中牌的情況。

題解

按照題意模擬即可。

AC程式碼

#include<stdio.h>
#include<vector>
#include<string>
#include<map>
#include<iostream>
#include<algorithm>
#include<string.h>
using namespace std;
string A[13]={"10","2","3","4","5","6"
 
,"7","8","9","A","J","K","Q"},S;//字典序 
string B[13]={"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
int ppnum[13];
int NOW,renp,WHO;
map<string,int>mp,ans;
vector<string>vt[4];
vector<string>Table,Temp;

int ishave(int who,int which)//看是否有請求的牌
{
	int num=0;
	for(int i=0;i<vt[who]
 
.size();i++)
 		if(vt[who][i]==B[which])
			num++;
	return num; 
}

string findmi(int who)//找到最小字典序的牌 
{
	int mi=mp[vt[who][0]]-1;
	for(int i=1;i<vt[who].size();i++)
		mi=min(mi,mp[vt[who][i]]-1);
	return A[mi];
}

void erasep(int who,string which)//刪除牌 
{
	for(int i=0;i<vt[who].size();i++)
		if(vt[
 
who][i]==which)
		{
			vt[who].erase(vt[who].begin()+i);
			return ;
		}
}

void player1holder()//第一個人出牌 
{
	if(ishave(0,NOW))
	{
		Table.push_back(B[NOW]);
		Temp.push_back(B[NOW]);
		erasep(0,B[NOW]);
		renp=1;
	}
	else 
	{
		string mi=findmi(0);
		Table.push_back(mi);
		Temp.push_back(mi);
		erasep(0,mi);
		renp=1;
	}
}	

bool challenge1()//第一個人置疑 
{
	if((WHO+1)%4==0&&!ishave(0,(NOW+1)%13))return true;
	int q=ishave(0,NOW);
	if(renp+q>4)return true;
	return false;
}

void player2holder()//第二個人出牌
{
	int num=ishave(1,NOW);
	if(num)
	{
		renp=num;
		while(num--)
		{
			erasep(1,B[NOW]);
			Table.push_back(B[NOW]);
			Temp.push_back(B[NOW]);
		}
	}
	else 
	{
		string mi=findmi(1);
		erasep(1,mi);
		Table.push_back(mi);
		Temp.push_back(mi);
		renp=1;
	}
} 

bool challenge2()//第二個人置疑 
{
	if((WHO+1)%4==1&&!ishave(1,(NOW+1)%13))return true;
	return false;
}

void player3holder()//第三個人出牌
{
	int num=ishave(2,NOW);
	if(num)
	{
		renp=num;
		while(num--)
		{
			erasep(2,B[NOW]);
			Table.push_back(B[NOW]);
			Temp.push_back(B[NOW]);
		}
	}
	else 
	{
		memset(ppnum,0,sizeof(ppnum));
		for(int i=0;i<vt[2].size();i++)
			ppnum[mp[vt[2][i]]-1]++;
		int minum=100;
		for(int i=0;i<13;i++)
			if(ppnum[i]!=0)
				minum=min(minum,ppnum[i]);
		for(int i=0;i<13;i++)
			if(minum==ppnum[i])
			{
				renp=minum;
				while(minum--)
				{
					Table.push_back(A[i]);
					Temp.push_back(A[i]);
					erasep(2,A[i]);
				}
				break;
			}
	}
} 

bool challenge3()//第三個人置疑 
{
	int num=ishave(2,NOW);
	return num==4;
}

void player4holder()//第四個人出牌
{
	int num=ishave(3,NOW);
	if(num==3||num==4)
	{
		renp=num;
		while(num--)
		{
			Table.push_back(B[NOW]);
			Temp.push_back(B[NOW]);
			erasep(3,B[NOW]);
		}
	}
	else 
	{
		for(int i=0;i<num;i++)
		{
			Table.push_back(B[NOW]);
			Temp.push_back(B[NOW]);
			erasep(3,B[NOW]);
		}
		if(vt[3].size()==0)
		{
			renp=num;
			return ;
		}
		string mi=findmi(3);
		Table.push_back(mi);
		Temp.push_back(mi);
		erasep(3,mi);
		renp=num+1;
	}
}

bool challenge4()//第四個人置疑
{
	return vt[WHO].size()==0;
}

void judge(int AA,int BB)
{
	int dui=1;
	for(int i=0;i<Temp.size();i++)
		if(Temp[i]!=B[NOW])
			dui=0;
	if(dui)
	{
		for(int i=0;i<Table.size();i++)
			vt[BB].push_back(Table[i]);
	}
	else 
	{
		for(int i=0;i<Table.size();i++)
			vt[AA].push_back(Table[i]);
	}
	Table.clear();
}
void debug()
{
	for(int i=0;i<4;i++)
	{
		for(int j=0;j<vt[i].size();j++)
			cout<<vt[i][j]<<" ";
		cout<<"\n";
	}
}
bool cmp(string a,string b)
{
	return ans[a]<ans[b];
}
int main()
{
	for(int i=0;i<13;i++)
		mp[A[i]]=i+1;
	for(int i=0;i<13;i++)
		ans[B[i]]=i+1;
	while(cin>>S)
	{
		for(int i=0;i<4;i++)vt[i].clear();
		Table.clear();
		
		vt[0].push_back(S);       //輸入 
		for(int i=0;i<12;i++)
		{
			cin>>S;
			vt[0].push_back(S);
		}
		for(int j=1;j<4;j++)
			for(int i=0;i<13;i++)
			{
				cin>>S;
				vt[j].push_back(S);
			}
 		
		int ok=1;	
		WHO=NOW=renp=0;//開始 
		while(ok)
		{
			Temp.clear();
			if(WHO==0)player1holder();
			if(WHO==1)player2holder();
			if(WHO==2)player3holder();
			if(WHO==3)player4holder();
			//printf("-----------%d ",WHO),cout<<B[NOW]<<endl;
			
			for(int WHOWHO=(WHO+1)%4;WHOWHO!=WHO;WHOWHO=(WHOWHO+1)%4)
			{
				if(WHOWHO==0&&challenge1()){judge(WHO,WHOWHO);break;}
				if(WHOWHO==1&&challenge2()){judge(WHO,WHOWHO);break;}
				if(WHOWHO==2&&challenge3()){judge(WHO,WHOWHO);break;}
				if(WHOWHO==3&&challenge4()){judge(WHO,WHOWHO);break;}
			}
			WHO=(WHO+1)%4;
			NOW=(NOW+1)%13;
			//debug();
			for(int i=0;i<4;i++)
				if(vt[i].size()==0)
					ok=0;
		}
		for(int i=0;i<4;i++)
		{
			sort(vt[i].begin(),vt[i].end(),cmp);
			if(vt[i].size()==0)printf("WINNER\n");
			else 
			{
				cout<<vt[i][0];
				for(int j=1;j<vt[i].size();j++)
					cout<<" "<<vt[i][j];
				cout<<"\n";
			}
		}
	}
}