hdu 3345
BFS+优先队列，这道题一见到时候就把我镇住了，这不是曹操传吗。。。。。。。。。。。。
#include<iostream>
#include<stdio.h>
#include<queue>
using namespace std;
struct node
{
friend bool operator < (node n1,node n2)
{
return n1.level<n2.level;
}
int x;
int y;
int level;
};
char battle[105][105];//正常
int map[105][105]; //加一
int fatherx[105][105]; //正常
int fathery[105][105]; //正常
int xx[4]={1,0,-1,0};
int yy[4]={0,1,0,-1};
int v,x,y;
void print(int x,int y)
{
int i,j,m,n;
for(i=x,j=y;i!=-1&&j!=-1;i=fatherx[m][n],j=fathery[m][n])
{
//cout<<i+1<<" "<<j+1<<endl;
if(battle[j][i]!='P'&&battle[j][i]!='Y')
battle[j][i]='*';
m=j;
n=i;
}
}
void BFS()
{
priority_queue<node> q;
node k;
k.x=x;
k.y=y;
k.level=v;
q.push(k);
while(!q.empty())
{
node k=q.top();
q.pop();
int i,j,r_mark=0;;
for(i=0;i<4;i++)
{
node m;
if(map[k.y+1+yy[i]][k.x+1+xx[i]]==0)
{
continue;
}
else if(map[k.y+1+yy[i]][k.x+1+xx[i]]==1&&k.level>=1)
{
fatherx[k.y+yy[i]][k.x+xx[i]]=k.x;
fathery[k.y+yy[i]][k.x+xx[i]]=k.y;
map[k.y+1+yy[i]][k.x+1+xx[i]]=0;
int mark=0;
for(j=0;j<4;j++)
{
if(map[k.y+1+yy[i]+yy[j]][k.x+1+xx[i]+xx[j]]==5)
{
mark=1;
break;
}
}
if(mark==0)
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=k.level-1;
q.push(m);
r_mark=1;
}
else
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=0;
q.push(m);
r_mark=1;
}
/* if(m.level==0)
{
printf("%d %d\n",m.x,m.y);
}*/
}
else if(map[k.y+1+yy[i]][k.x+1+xx[i]]==2&&k.level>=2)
{
fatherx[k.y+yy[i]][k.x+xx[i]]=k.x;
fathery[k.y+yy[i]][k.x+xx[i]]=k.y;
map[k.y+1+yy[i]][k.x+1+xx[i]]=0;
int mark=0;
for(j=0;j<4;j++)
{
if(map[k.y+1+yy[i]+yy[j]][k.x+1+xx[i]+xx[j]]==5)
{
mark=1;
break;
}
}
if(mark==0)
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=k.level-2;
q.push(m);
r_mark=1;
}
else
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=0;
q.push(m);
r_mark=1;
}
/* if(m.level==0)
{
printf("%d %d\n",m.x,m.y);
}*/
}
else if(map[k.y+1+yy[i]][k.x+1+xx[i]]==3&&k.level>=3)
{
fatherx[k.y+yy[i]][k.x+xx[i]]=k.x;
fathery[k.y+yy[i]][k.x+xx[i]]=k.y;
map[k.y+1+yy[i]][k.x+1+xx[i]]=0;
int mark=0;
for(j=0;j<4;j++)
{
if(map[k.y+1+yy[i]+yy[j]][k.x+1+xx[i]+xx[j]]==5)
{
mark=1;
break;
}
}
if(mark==0)
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=k.level-3;
q.push(m);
r_mark=1;
}
else
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=0;
q.push(m);
r_mark=1;
}
/* if(m.level==0)
{
printf("%d %d\n",m.x,m.y);
}*/
}
else if(map[k.y+1+yy[i]][k.x+1+xx[i]]==6&&k.level>=1)
{
fatherx[k.y+yy[i]][k.x+xx[i]]=k.x;
fathery[k.y+yy[i]][k.x+xx[i]]=k.y;
map[k.y+1+yy[i]][k.x+1+xx[i]]=0;
int mark=0;
for(j=0;j<4;j++)
{
if(map[k.y+1+yy[i]+yy[j]][k.x+1+xx[i]+xx[j]]==5)
{
mark=1;
break;
}
}
if(mark==0)
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=k.level-1;
q.push(m);
r_mark=1;
}
else
{
m.x=k.x+xx[i];
m.y=k.y+yy[i];
m.level=0;
q.push(m);
r_mark=1;
}
/* if(m.level==0)
{
printf("%d %d\n",m.x,m.y);
}*/
}
}
/* cout<<"juzhenwei"<<endl;
int h,l;
for(h=0;h<7;h++)
{
for(l=0;l<8;l++)
printf("%d ",map[h][l]);
printf("\n");
}
// cout<<q.top().level<<" ";
// cout<<endl;*/
if(r_mark==0)
print(k.x,k.y);
}
}
int main()
{
int total_case,iii;
scanf("%d",&total_case);
for(iii=0;iii<total_case;iii++)
{
int n,m,i,j;
memset(map,0,sizeof(map));
memset(fatherx,0,sizeof(fatherx));
memset(fathery,0,sizeof(fathery));
scanf("%d%d%d",&n,&m,&v);
for(i=0;i<n;i++)
scanf("%s",battle[i]);
for(i=0;i<n;i++)
for(j=0;j<m;j++)
{
if(battle[i][j]=='.')
map[i+1][j+1]=1;
else if(battle[i][j]=='T')
map[i+1][j+1]=2;
else if(battle[i][j]=='R')
map[i+1][j+1]=3;
else if(battle[i][j]=='Y')
{
y=i;
x=j;
map[i+1][j+1]==0;
}
else if(battle[i][j]=='E')
map[i+1][j+1]=5;
else if(battle[i][j]=='P')
map[i+1][j+1]=6;
}
/*for(i=0;i<n;i++)
printf("%s\n",battle[i]);
/*for(i=0;i<n+2;i++)
{
for(j=0;j<m+2;j++)
printf("%d ",map[i][j]);
printf("\n");
}*/
fatherx[y][x]=-1;
fathery[y][x]=-1;
BFS();
for(i=0;i<n;i++)
printf("%s\n",battle[i]);
// cout<<fatherx[0][3]+1<<" "<<fathery[0][3]+1<<endl;
printf("\n");
}
}