第六届华为创新杯编程大赛-第三轮10 May 2014

import com.sun.crypto.provider.TlsKeyMaterialGenerator;

import java.util.*;
public class project1 {
    public static void main( String[] args ) {
        Scanner cin = new Scanner(System.in);
        List<String> keys = new ArrayList<String>();
        if (cin.hasNext()){
            String inputKeys = cin.nextLine();
            for(int i = 0;i<13;i++){
                String key = inputKeys.substring(2*i,2*i+2);
                keys.add(key);
            }
        }
        List<String> active = new ArrayList<String>();
        List<String> anotherKeys = createAnotherKeys();
        for(String anotherKey:anotherKeys){
            if(validate1(keys,anotherKey)||validate2(keys, anotherKey)||validate3(keys, anotherKey)){
                if(!active.contains(anotherKey)){
                    active.add(anotherKey);
                }
            }
        }
        System.out.println(active.size());
        String output = "";
        for(String item: active){
            output+=item;
        }
        System.out.println(output);
    }

    public static List<String> createAnotherKeys(){
        List<String> anotherKey = new ArrayList<String>();
        for(int i = 1;i<=9;i++){
            String temp = String.valueOf(i)+"T";
            anotherKey.add(temp);
        }
        for(int i = 1;i<=9;i++){
            String temp = String.valueOf(i)+"D";
            anotherKey.add(temp);
        }
        for(int i = 1;i<=9;i++){
            String temp = String.valueOf(i)+"W";
            anotherKey.add(temp);
        }
        return anotherKey;
    }

    public static boolean validate1(List<String> inputKeys,String anotherKey){
        List<String> newKeys = new ArrayList<String>(inputKeys);
        newKeys.add(anotherKey);
        newKeys = remove3same(newKeys);
        newKeys = remove3diff(newKeys);
        if(newKeys.size() == 2){
            if(newKeys.get(0).equals(newKeys.get(1))){
                return true;
            }
        }
        return false;
    } 
    public static boolean validate2(List<String> inputKeys,String anotherKey){
        List<String> newKeys = new ArrayList<String>(inputKeys);
        newKeys.add(anotherKey);
        newKeys = remove3diff(newKeys);
        newKeys = remove3same(newKeys);
        if(newKeys.size() == 2){
            if(newKeys.get(0).equals(newKeys.get(1))){
                return true;
            }
        }
        return false;
    }
    public static List<String> remove3same(List<String> inputKeys){
        //删除三张相同牌
    }
    public static List<String> remove3diff(List<String> inputKeys){
        //删除三张顺子牌
    }
}