Red Huang

Red Huang

uva 10536

不錯的博弈題

//====================================================================||  
// Name        : Game of Euler.cpp                                              ||  
// Date : 2013/7/19 下午8:22:10                                               ||  
// Author : GCA                                                       ||  
//                  6AE7EE02212D47DAD26C32C0FE829006                  ||  
//====================================================================||  
#include <iostream>  
#include <cstdio>  
#include <cstring>  
#include <algorithm>  
#include <cmath>  
#include <climits>  
#include <vector>  
#include <set>  
#include <map>  
#include <queue>  
#include <cctype>  
#include <utility>  
using namespace std;  
#ifdef ONLINE\_JUDGE  
#define ll "%lld"  
#else  
#define ll "%I64d"  
#endif  
typedef unsigned int uint;  
typedef long long int Int;  
#define Set(a,s) memset(a,s,sizeof(a))  
#define Write(w) freopen(w,"w",stdout)  
#define Read(r) freopen(r,"r",stdin)  
#define Pln() printf("\\n")  
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()  
#define De(x)printf(#x"%d\\n",x)  
#define For(i,x)for(int i=0;i<x;i++)  
#define CON(x,y) x##y  
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\  
    printf("%d ",dp\[htx\]\[hty\]);}Pln();}  
#define M 10011  
#define PII pair<int,int\>  
#define PB push\_back  
#define oo INT\_MAX  
#define Set\_oo 0x3f  
#define Is\_debug true  
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)  
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)  
#define eps 1e-6  
bool xdy(double x,double y){return x>y+eps;}  
bool xddy(double x,double y){return x>y-eps;}  
bool xcy(double x,double y){return x<y-eps;}  
bool xcdy(double x,double y){return x<y+eps;}  
int min3(int x,int y,int z){  
    int tmp=min(x,y);  
    return min(tmp,z);  
}  
int max3(int x,int y,int z){  
    int tmp=max(x,y);  
    return max(tmp,z);  
}  
char mz\[5\]\[5\];  
int dp\[1<<16\];  
bool dfs(){  
    bool over=true;  
    for(int i=0;i<4;i++){  
        for(int j=0;j<4;j++){  
            if(mz\[i\]\[j\]!='X'){over=false;break;}  
        }  
    }  
    if(over)return false;  
  
    int tmp=0;  
    for(int i=0;i<4;i++){  
        for(int j=0;j<4;j++){  
            if(mz\[i\]\[j\]=='.')tmp|=1<<(i\*4+j);  
        }  
    }  
    if(dp\[tmp\]!=-1)return dp\[tmp\];  
    bool win=true;  
    bool canpin=true;  
    for(int i=0;i<4;i++){  
        for(int j=0;j<4;j++){  
            if(i==0||i==3||j==0||j==3){  
                for(int k=0;k<3;k++){  
                    if(j==0){  
                        canpin=true;  
                        for(int p=0;p<=k;p++){  
                            if(j+p<0||j+p>=4){canpin=false;break;}  
                            if(mz\[i\]\[j+p\]!='.'){canpin=false;break;}  
                        }  
                        if(canpin){  
                            for(int p=0;p<=k;p++){  
                                mz\[i\]\[j+p\]='X';  
                            }  
                            if(dfs())win=false;  
                            for(int p=0;p<=k;p++){  
                                mz\[i\]\[j+p\]='.';  
                            }  
                        }  
                    }  
                    if(j==3){  
                        canpin=true;  
                        for(int p=0;p<=k;p++){  
                            if(j-p<0||j-p>=4){canpin=false;break;}  
                            if(mz\[i\]\[j-p\]!='.'){canpin=false;break;}  
                        }  
                        if(canpin){  
                            for(int p=0;p<=k;p++){  
                                mz\[i\]\[j-p\]='X';  
                            }  
                            if(dfs())win=false;  
                            for(int p=0;p<=k;p++){  
                                mz\[i\]\[j-p\]='.';  
                            }  
                        }  
                    }  
                    if(i==3){  
                        canpin=true;  
                        for(int p=0;p<=k;p++){  
                            if(i-p<0||i-p>=4){canpin=false;break;}  
                            if(mz\[i-p\]\[j\]!='.'){canpin=false;break;}  
                        }  
                        if(canpin){  
                            for(int p=0;p<=k;p++){  
                                mz\[i-p\]\[j\]='X';  
                            }  
                            if(dfs())win=false;  
                            for(int p=0;p<=k;p++){  
                                mz\[i-p\]\[j\]='.';  
                            }  
                        }  
                    }  
                    if(i==0){  
                        canpin=true;  
                        for(int p=0;p<=k;p++){  
                            if(i+p<0||i+p>=4){canpin=false;break;}  
                            if(mz\[i+p\]\[j\]!='.'){canpin=false;break;}  
                        }  
                        if(canpin){  
                            for(int p=0;p<=k;p++){  
                                mz\[i+p\]\[j\]='X';  
                            }  
                            if(dfs())win=false;  
                            for(int p=0;p<=k;p++){  
                                mz\[i+p\]\[j\]='.';  
                            }  
                        }  
                    }  
                }  
            }  
            else{  
                if(mz\[i\]\[j\]=='.'){  
                    mz\[i\]\[j\]='X';  
                    if(dfs())win=false;  
                    mz\[i\]\[j\]='.';  
                }  
            }  
        }  
    }  
//    for(int i=0;i<4;i++){  
//        puts(mz\[i\]);  
//    }printf("%d\\n",win);  
    return (dp\[tmp\]=win);  
}  
void solve(){  
    int tmp=0;  
    for(int i=0;i<4;i++){  
        for(int j=0;j<4;j++){  
            if(mz\[i\]\[j\]=='.')tmp|=(1<<(i\*4+j));  
        }  
    }  
    dfs();  
    printf("%s\\n",(dp\[tmp\])?"LOSING":"WINNING");  
  
}  
int main() {  
    Set(dp,-1);  
    ios\_base::sync\_with\_stdio(0);  
    int test;  
    scanf("%d%\*c%\*c",&test);  
    while(test--){  
        for(int i=0;i<4;i++){  
            scanf("%s%\*c",mz\[i\]);  
        }getchar();  
        solve();  
    }  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
}  

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