• bzoj_1033: [ZJOI2008]杀蚂蚁antbuster


    只能说恶心啊...

    从网上找了一个标程,把所有信息都输出出来,对着调了一下午...

    找到了两个错:

    1.蚂蚁移动时,并不是只会向信息素最多的地方移动

    2.蚂蚁被卡在(n,m) 时,忘了拿蛋糕了...

     

    #include <cstdio>
    #include <cstring>
    #include <cstdlib>
    #include <iostream>
    #include <cmath>
    #include <algorithm>
    #define ll long long
    #define dd double
    #define ld long double
    #define mem(a,b) memset(a,b,sizeof(a))
    using namespace std;
    const int S=26;
    const int TTT=200006;
    const int N=12;
    const dd esp=1e-10;
    const int INF=0x7fffffff;
    inline dd dis(int x3,int y3,int x4,int y4)
    {
        return sqrt( (y3-y4)*(y3-y4)+(x3-x4)*(x3-x4) );
    }
    struct Ant
    {
        int x,y,age,lev;
        ll blood,bloodlimit;
        int lasx,lasy;
        bool cakeif;
        Ant(){}
        inline Ant(int xx,int yy,int agee,int levv,ll bloodd,int cakeiff)
        {
            x=xx;y=yy;age=agee;lev=levv;blood=bloodd;cakeif=cakeiff;
            bloodlimit=bloodd;
            lasx=-1;lasy=-1;
        }
        void out()
        {
            printf("%d %d %d %d %d %d
    ",x,y,age,lev,blood,cakeif);
        }
    };
    
    int n,m;
    int s,d,r;
    int x[S],y[S];
    int T;
    int ban[N][N];
    
    inline void Init()
    {
        scanf("%d%d",&n,&m);
        scanf("%d%d%d",&s,&d,&r);
        for(int i=1;i<=s;++i)
        {
            scanf("%d%d",&x[i],&y[i]);
            ban[x[i]][y[i]]=1;
        }
        scanf("%d",&T);
    }
    
    int xin[N][N];
    Ant ji[N];int he;
    int cnt;
    int bx[10]={0,1,0,-1};
    int by[10]={1,0,-1,0};
    bool cake;
    
    inline int callev(int ccc)
    {
        return (ccc-1)/6+1;
    }
    
    inline ll calblood(int ccc)
    {
        return (ll)(4*pow(1.1,callev(ccc)));
    }
    
    inline void leftxin()
    {
        for(int i=1;i<=he;++i)
            xin[ji[i].x][ji[i].y]+=(ji[i].cakeif?5:2);
    }
    
    inline void walk(int order,int di)
    {
        ji[order].lasx=ji[order].x;ji[order].lasy=ji[order].y;
        ji[order].x+=bx[di];ji[order].y+=by[di];
        ban[ji[order].lasx][ji[order].lasy]=0;
        ban[ji[order].x][ji[order].y]=1;
        if(ji[order].x==n&&ji[order].y==m&&cake)
            ji[order].cakeif=1,cake=0,ji[order].blood=min(ji[order].bloodlimit,ji[order].blood+ji[order].bloodlimit/2);
    }
    void out1(int order)
    {
        printf("order=%d age=%d x=%d y=%d
    ",order,ji[order].age,ji[order].x,ji[order].y);
    }
    
    inline void move(int order)
    {
        int mn=-1,tx,ty;
        for(int i=0;i<4;++i)
        {
            tx=ji[order].x+bx[i];ty=ji[order].y+by[i];
            if(tx<0||tx>n||ty<0||ty>m||ban[tx][ty]||(tx==ji[order].lasx&&ty==ji[order].lasy))
                continue;
            if(mn<xin[tx][ty])
                mn=xin[tx][ty];
        }
        if(mn==-1)
        {
            ji[order].lasx=ji[order].lasy=-1;
            if(ji[order].x==n&&ji[order].y==m&&cake)
                ji[order].cakeif=1,cake=0,ji[order].blood=min(ji[order].bloodlimit,ji[order].blood+ji[order].bloodlimit/2);
            return ;
        }
        int di;
        for(int i=0;i<4;++i)
        {
            tx=ji[order].x+bx[i];ty=ji[order].y+by[i];
            if(tx<0||tx>n||ty<0||ty>m||ban[tx][ty]||(tx==ji[order].lasx&&ty==ji[order].lasy))
                continue;
            if(mn==xin[tx][ty])
            {
                di=i;
                break;
            }
        }
        if((ji[order].age+1)%5==0)
        {
            while(1)
            {
                di=(di+3)%4;
                tx=ji[order].x+bx[di];ty=ji[order].y+by[di];
                if(tx<0||tx>n||ty<0||ty>m||ban[tx][ty]||(tx==ji[order].lasx&&ty==ji[order].lasy))
                    continue;
                break;
            }
        }
        walk(order,di);
    }
    
    inline void addage()
    {
        for(int i=1;i<=he;++i)
            ++ji[i].age;
    }
    
    inline void reducexin()
    {
        for(int i=0;i<=n;++i)
            for(int j=0;j<=m;++j)
                if(xin[i][j])
                    --xin[i][j];
    }
    
    inline void A(int order)
    {
        ji[order].blood-=d;
    }
    
    inline void checkdie()
    {
        int ttt=0;
        for(int i=1;i<=he;++i)
        {
            if(ji[i].blood>=0)
                ji[++ttt]=ji[i];
            else
            {
                ban[ji[i].x][ji[i].y]=0;
                if(ji[i].cakeif)
                    cake=1;
            }
        }
        he=ttt;
    }
    
    inline int is_in(int ta,int aid,int order)
    {
        int lx=x[ta],ly=y[ta],rx=ji[aid].x,ry=ji[aid].y;
        if(lx>rx)
            swap(lx,rx),swap(ly,ry);
        if(ji[order].x<lx||ji[order].x>rx)
            return 0;
        if(ji[order].y<min(ly,ry)||ji[order].y>max(ly,ry))
            return 0;
        dd A=0,B=0,C=0;
        if(lx==rx)
            A=1,B=0,C=-lx;
        else
            A=(dd)(ry-ly)/(rx-lx),B=-1.0,C=(dd)ly-(dd)lx*A;
        if( fabs(A*ji[order].x+B*ji[order].y+C)/sqrt(A*A+B*B)<0.5+esp )
            return 1;
        return 0;
    }
    
    inline void attack(int order)
    {
        if(he==0)
            return ;
        int aid=-1,age=0;
        dd distance=INF,dtemp;
        for(int i=1;i<=he;++i)
        {
            dtemp=dis(x[order],y[order],ji[i].x,ji[i].y);
            if(dtemp>r)
                continue;
            if( fabs(dtemp-distance)<esp )
            {
                if(age<ji[i].age)
                {
                    aid=i;
                    age=ji[i].age;
                }
            }
            else
                if( distance+esp>dtemp )
                {
                    aid=i;
                    distance=dtemp;
                    age=ji[i].age;
                }
        }
        for(int i=1;i<=he;++i)
        {
            dtemp=dis(x[order],y[order],ji[i].x,ji[i].y);
            if(dtemp>r)
                continue;
            if(ji[i].cakeif)
                aid=i;
        }
        if(aid==-1)
            return ;
        A(aid);
        for(int i=1;i<=he;++i)
        {
            if(i==aid||!is_in(order,aid,i))
                continue;
            A(i);
        }
    }
    
    inline int check()
    {
        for(int i=1;i<=he;++i)
            if(ji[i].x==0&&ji[i].y==0&&ji[i].cakeif)
                return 1;
        return 0;
    }
    
    void out(int x)
    {
        printf("Game over after %d seconds
    ",x);
        printf("%d
    ",he);
        for(int i=1;i<=he;++i)
            printf("%d %d %lld %d %d
    ",ji[i].age,ji[i].lev,ji[i].blood,ji[i].x,ji[i].y);
    }
    
    void outend()
    {
        printf("The game is going on
    ");
        printf("%d
    ",he);
        for(int i=1;i<=he;++i)
            printf("%d %d %lld %d %d
    ",ji[i].age,ji[i].lev,ji[i].blood,ji[i].x,ji[i].y);
    }
    
    inline void work()
    {
        cake=1;cnt=0;mem(xin,0);
        for(int i=1;i<=T;++i)
        {
            if(he<6&&!ban[0][0])
            {
                ++cnt;
                ji[++he]=Ant(0,0,0,callev(cnt),calblood(cnt),0);
                ban[0][0]=1;
            }
            leftxin();
            for(int j=1;j<=he;++j)
                move(j);
            for(int j=1;j<=s;++j)
                attack(j);
            checkdie();
            if(check())
            {
                out(i);
                return ;
            }
            addage();
            reducexin();
        }
        outend();
    }
    int main(){
    
        //freopen("antbuster_ex.in","r",stdin);
        //freopen("antbuster_ex.out","w",stdout);
    
        //freopen("in.in","r",stdin);
        //freopen("out.out","w",stdout);
    
        Init();
        work();
    }
    删注释

     

    #include <cstdio>
    #include <cstring>
    #include <cstdlib>
    #include <iostream>
    #include <cmath>
    #include <algorithm>
    #define ll long long
    #define dd double
    #define ld long double
    #define mem(a,b) memset(a,b,sizeof(a))
    using namespace std;
    const int S=26;
    const int TTT=200006;
    const int N=12;
    const dd esp=1e-10;
    const int INF=0x7fffffff;
    inline dd dis(int x3,int y3,int x4,int y4)
    {
        return sqrt( (y3-y4)*(y3-y4)+(x3-x4)*(x3-x4) );
    }
    struct Ant
    {
        int x,y,age,lev;
        ll blood,bloodlimit;
        int lasx,lasy;
        bool cakeif;
        Ant(){}
        inline Ant(int xx,int yy,int agee,int levv,ll bloodd,int cakeiff)
        {
            x=xx;y=yy;age=agee;lev=levv;blood=bloodd;cakeif=cakeiff;
            bloodlimit=bloodd;
            lasx=-1;lasy=-1;
        }
        void out()
        {
            printf("%d %d %d %d %d %d
    ",x,y,age,lev,blood,cakeif);
        }
    };
    
    int n,m;
    int s,d,r;
    int x[S],y[S];
    int T;
    int ban[N][N];
    
    inline void Init()
    {
        scanf("%d%d",&n,&m);
        scanf("%d%d%d",&s,&d,&r);
        for(int i=1;i<=s;++i)
        {
            scanf("%d%d",&x[i],&y[i]);
            ban[x[i]][y[i]]=1;
            //printf("x[i]=%d y[i]=%d
    ",x[i],y[i]);
        }
        scanf("%d",&T);
    }
    
    int xin[N][N];
    Ant ji[N];int he;
    int cnt;
    int bx[10]={0,1,0,-1};
    int by[10]={1,0,-1,0};
    bool cake;
    
    inline int callev(int ccc)
    {
        return (ccc-1)/6+1;
    }
    
    inline ll calblood(int ccc)
    {
        return (ll)(4*pow(1.1,callev(ccc)));
    }
    
    inline void leftxin()
    {
        for(int i=1;i<=he;++i)
            xin[ji[i].x][ji[i].y]+=(ji[i].cakeif?5:2);
    }
    
    inline void walk(int order,int di)
    {
        ji[order].lasx=ji[order].x;ji[order].lasy=ji[order].y;
        ji[order].x+=bx[di];ji[order].y+=by[di];
        ban[ji[order].lasx][ji[order].lasy]=0;
        ban[ji[order].x][ji[order].y]=1;
        if(ji[order].x==n&&ji[order].y==m&&cake)
            ji[order].cakeif=1,cake=0,ji[order].blood=min(ji[order].bloodlimit,ji[order].blood+ji[order].bloodlimit/2);
    }
    //printf("%d %d %d %d %d %d
    ",x,y,age,lev,blood,cakeif);
    void out1(int order)
    {
        printf("order=%d age=%d x=%d y=%d
    ",order,ji[order].age,ji[order].x,ji[order].y);
    }
    
    inline void move(int order)//不能只是保存信息素最多的方向,其他少的也可以走...
    {
        int mn=-1,tx,ty;
        for(int i=0;i<4;++i)
        {
            tx=ji[order].x+bx[i];ty=ji[order].y+by[i];
            if(tx<0||tx>n||ty<0||ty>m||ban[tx][ty]||(tx==ji[order].lasx&&ty==ji[order].lasy))
                continue;
            if(mn<xin[tx][ty])
                mn=xin[tx][ty];
        }
        if(mn==-1)// 忘拿蛋糕了....
        {
            ji[order].lasx=ji[order].lasy=-1;
            if(ji[order].x==n&&ji[order].y==m&&cake)
                ji[order].cakeif=1,cake=0,ji[order].blood=min(ji[order].bloodlimit,ji[order].blood+ji[order].bloodlimit/2);
            return ;
        }
        int di;
        for(int i=0;i<4;++i)
        {
            tx=ji[order].x+bx[i];ty=ji[order].y+by[i];
            if(tx<0||tx>n||ty<0||ty>m||ban[tx][ty]||(tx==ji[order].lasx&&ty==ji[order].lasy))
                continue;
            if(mn==xin[tx][ty])
            {
                di=i;
                break;
            }
        }
        if((ji[order].age+1)%5==0)
        {
            while(1)
            {
                di=(di+3)%4;
                tx=ji[order].x+bx[di];ty=ji[order].y+by[di];
                if(tx<0||tx>n||ty<0||ty>m||ban[tx][ty]||(tx==ji[order].lasx&&ty==ji[order].lasy))
                    continue;
                break;
            }
        }
        walk(order,di);
    }
    
    inline void addage()
    {
        for(int i=1;i<=he;++i)
            ++ji[i].age;
    }
    
    inline void reducexin()
    {
        for(int i=0;i<=n;++i)
            for(int j=0;j<=m;++j)
                if(xin[i][j])
                    --xin[i][j];
    }
    
    inline void A(int order)
    {
        ji[order].blood-=d;
    }
    
    inline void checkdie()
    {
        int ttt=0;
        for(int i=1;i<=he;++i)
        {
            if(ji[i].blood>=0)
                ji[++ttt]=ji[i];
            else
            {
                ban[ji[i].x][ji[i].y]=0;
                if(ji[i].cakeif)
                    cake=1;
            }
        }
        he=ttt;
    }
    
    inline int is_in(int ta,int aid,int order)
    {
        int lx=x[ta],ly=y[ta],rx=ji[aid].x,ry=ji[aid].y;
        //printf("lx=%d ly=%d rx=%d ry=%d ",lx,ly,rx,ry);
        if(lx>rx)
            swap(lx,rx),swap(ly,ry);
        if(ji[order].x<lx||ji[order].x>rx)
            return 0;
        if(ji[order].y<min(ly,ry)||ji[order].y>max(ly,ry))
            return 0;
        dd A=0,B=0,C=0;
        if(lx==rx)
            A=1,B=0,C=-lx;
        else
            A=(dd)(ry-ly)/(rx-lx),B=-1.0,C=(dd)ly-(dd)lx*A;
        //printf("lx=%d ly=%d rx=%d ry=%d aid=%d A=%lf B=%lf C=%lf
    ",lx,ly,rx,ry,aid,A,B,C);
        if( fabs(A*ji[order].x+B*ji[order].y+C)/sqrt(A*A+B*B)<0.5+esp )
            return 1;
        return 0;
    }
    
    inline void attack(int order)
    {
        if(he==0)
            return ;
        int aid=-1,age=0;
        dd distance=INF,dtemp;
        for(int i=1;i<=he;++i)
        {
            dtemp=dis(x[order],y[order],ji[i].x,ji[i].y);
            if(dtemp>r)
                continue;
            if( fabs(dtemp-distance)<esp )
            {
                if(age<ji[i].age)
                {
                    aid=i;
                    age=ji[i].age;
                }
            }
            else
                if( distance+esp>dtemp )
                {
                    aid=i;
                    distance=dtemp;
                    age=ji[i].age;
                }
        }
        for(int i=1;i<=he;++i)
        {
            dtemp=dis(x[order],y[order],ji[i].x,ji[i].y);
            if(dtemp>r)
                continue;
            if(ji[i].cakeif)
            {
                //printf("now????
    ");
                aid=i;
            }
        }
        if(aid==-1)
            return ;
        //printf("tax=%d tay=%d aidx=%d aidy=%d
    ",x[order],y[order],ji[aid].x,ji[aid].y);
        A(aid);
        for(int i=1;i<=he;++i)
        {
            if(i==aid||!is_in(order,aid,i))
                continue;
            //printf("tax=%d tay=%d aid=%d i=%d 好疼啊
    ",x[order],y[order],aid,i);
            A(i);
        }
    }
    
    inline int check()
    {
        for(int i=1;i<=he;++i)
            if(ji[i].x==0&&ji[i].y==0&&ji[i].cakeif)
                return 1;
        return 0;
    }
    
    void out(int x)
    {
        printf("Game over after %d seconds
    ",x);
        printf("%d
    ",he);
        for(int i=1;i<=he;++i)
            printf("%d %d %lld %d %d
    ",ji[i].age,ji[i].lev,ji[i].blood,ji[i].x,ji[i].y);
    }
    
    void outend()
    {
        printf("The game is going on
    ");
        printf("%d
    ",he);
        for(int i=1;i<=he;++i)
            printf("%d %d %lld %d %d
    ",ji[i].age,ji[i].lev,ji[i].blood,ji[i].x,ji[i].y);
    }
    
    //bool tmpp[N][N];
    void get_now()
    {
        printf("
    ");
        for(int i=0;i<=n;++i)
        {
            for(int j=0;j<=m;++j)
                printf("%d ",ban[i][j]);
            printf("
    ");
        }
        printf("
    ");
        for(int i=1;i<=he;++i)
            printf("i=%d if=%d lasx=%d lasy=%d x=%d y=%d age=%d lev=%d blood=%lld
    ",i,ji[i].cakeif,ji[i].lasx,ji[i].lasy,ji[i].x,ji[i].y,ji[i].age,ji[i].lev,ji[i].blood);
    
        /*for(int i=1;i<=he;++i)
            printf("blood=%lld
    ",ji[i].blood);*/
    
    }
    
    inline void work()
    {
        cake=1;cnt=0;mem(xin,0);
        for(int i=1;i<=T;++i)
        {
            //printf("-----------now=%d
    ",i);
            
            if(he<6&&!ban[0][0])
            {
                ++cnt;
                ji[++he]=Ant(0,0,0,callev(cnt),calblood(cnt),0);
                //printf("lev=%d blood=%lld cnt=%d
    ",ji[he].lev,ji[he].blood,cnt);
                //printf("cnt=%d
    ",cnt);
                //ji[he].out();
                ban[0][0]=1;
            }//get_now();
            leftxin();
            for(int j=1;j<=he;++j)
                move(j);
            /*printf("------xinxi------
    ");
            for(int l=0;l<=n;++l)
            {
                for(int j=0;j<=m;++j)
                    printf("%d ",xin[l][j]);
                printf("
    ");
            }
            printf("
    ");*/
            //get_now();
            for(int j=1;j<=s;++j)
                attack(j);
            checkdie();
            if(check())
            {
                out(i);
                return ;
            }
            addage();
            reducexin();
    
            //get_now();
    
            //for(int i=1;i<=he;++i)
            //    ji[i].out();
            //printf("he=%d
    ",he);
            
        }
        outend();
    }
    int main(){
    
        //freopen("antbuster_ex.in","r",stdin);
        //freopen("antbuster_ex.out","w",stdout);
    
        //freopen("in.in","r",stdin);
        //freopen("out.out","w",stdout);
    
        Init();
        work();
    }
    没删注释

     

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  • 原文地址:https://www.cnblogs.com/A-LEAF/p/7646659.html
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