OJ-Problems-Source/HDOJ/3446_autoAC.cpp

171 lines
4.5 KiB
C++
Raw Normal View History

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <algorithm>
using namespace std;
const int N=250;
int n;
int head;
int tail;
int Start;
int Finish;
int link[N];
int Father[N];
int Base[N];
int Q[N];
bool mark[N];
bool mat[N][N];
bool InBlossom[N];
bool in_Queue[N];
void BlossomContract(int x,int y){
memset(mark,0,sizeof(mark));
memset(InBlossom,0,sizeof(InBlossom));
#define pre Father[link[i]]
int lca,i;
for (i=x;i;i=pre) {i=Base[i]; mark[i]=true; }
for (i=y;i;i=pre) {i=Base[i]; if (mark[i]) {lca=i; break;} }
for (i=x;Base[i]!=lca;i=pre){
if (Base[pre]!=lca) Father[pre]=link[i];
InBlossom[Base[i]]=true;
InBlossom[Base[link[i]]]=true;
}
for (i=y;Base[i]!=lca;i=pre){
if (Base[pre]!=lca) Father[pre]=link[i];
InBlossom[Base[i]]=true;
InBlossom[Base[link[i]]]=true;
}
#undef pre
if (Base[x]!=lca) Father[x]=y;
if (Base[y]!=lca) Father[y]=x;
for (i=1;i<=n;i++)
if (InBlossom[Base[i]]){
Base[i]=lca;
if (!in_Queue[i]){
Q[++tail]=i;
in_Queue[i]=true;
}
}
}
void Change(){
int x,y,z;
z=Finish;
while (z){
y=Father[z];
x=link[y];
link[y]=z;
link[z]=y;
z=x;
}
}
void FindAugmentPath(){
memset(Father,0,sizeof(Father));
memset(in_Queue,0,sizeof(in_Queue));
for (int i=1;i<=n;i++) Base[i]=i;
head=0; tail=1;
Q[1]=Start;
in_Queue[Start]=1;
while (head!=tail){
int x=Q[++head];
for (int y=1;y<=n;y++)
if (mat[x][y] && Base[x]!=Base[y] && link[x]!=y)
if ( Start==y || link[y] && Father[link[y]] )
BlossomContract(x,y);
else if (!Father[y]){
Father[y]=x;
if (link[y]){
Q[++tail]=link[y];
in_Queue[link[y]]=true;
}
else{
Finish=y;
Change();
return;
}
}
}
}
void Edmonds(){
memset(link,0,sizeof(link));
for (Start=1;Start<=n;Start++)
if (link[Start]==0)
FindAugmentPath();
}
int MaxMatch()
{
Edmonds();
int cnt=0;
for (int i=1;i<=n;i++)
if (link[i]) cnt++;
return cnt;
}
void output(){
memset(mark,0,sizeof(mark));
int cnt=0;
for (int i=1;i<=n;i++)
if (link[i]) cnt++;
printf("%d\n",cnt);
for (int i=1;i<=n;i++)
if (!mark[i] && link[i]){
mark[i]=true;
mark[link[i]]=true;
printf("%d %d\n",i,link[i]);
}
}
char str[50][50];
const int dx[]={-1,-1,-1,1,1,1,0,0,2,-2,2,-2,2,-2,2,-2,1,-1,-1,1};
const int dy[]={-1,1,0,0,1,-1,-1,1,2,2,-2,-2,1,-1,-1,1,2,-2,2,-2};
int main()
{
int ci,pl=1;scanf("%d",&ci);
while(ci--)
{
int r,c;scanf("%d%d",&r,&c);
n=r*c;
for(int i=0;i<r;i++) scanf("%s",str[i]);
int maxMatch,maxMatchK;
memset(mat,0,sizeof(mat));
for(int i=0;i<r;i++)
{
for(int j=0;j<c;j++)
{
int p1=i*c+j+1;
if(str[i][j]=='#'||str[i][j]=='K') continue;
for(int k=0;k<20;k++)
{
int x=i+dx[k],y=j+dy[k];
if(x>=0&&x<r&&y>=0&&y<c){
if(str[x][y]=='#'||str[x][y]=='K') continue;
int p2=x*c+y+1;
mat[p1][p2]=1;
}
}
}
}
maxMatch=MaxMatch();
memset(mat,0,sizeof(mat));
for(int i=0;i<r;i++)
{
for(int j=0;j<c;j++)
{
int p1=i*c+j+1;
if(str[i][j]=='#') continue;
for(int k=0;k<24;k++)
{
int x=i+dx[k],y=j+dy[k];
if(x>=0&&x<r&&y>=0&&y<c){
if(str[x][y]=='#') continue;
int p2=x*c+y+1;
mat[p1][p2]=1;
}
}
}
}
maxMatchK=MaxMatch();
if(maxMatch==maxMatchK)
printf("Case #%d: daizhenyang lose\n",pl++);
else printf("Case #%d: daizhenyang win\n",pl++);
}
return 0;
}