http://acm.hdu.edu.cn/showproblem.php?pid=4308
Saving Princess claire_
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2305 Accepted Submission(s): 822
Out of anger, little Prince ykwd decides to break into the maze to rescue his lovely Princess.
The
maze can be described as a matrix of r rows and c columns, with grids,
such as 'Y', 'C', '*', '#' and 'P', in it. Every grid is connected with
its up, down, left and right grids.
There is only one 'Y' which means the initial position when Prince ykwd breaks into the maze.
There is only one 'C' which means the position where Princess claire_ is jailed.
There
may be many '*'s in the maze, representing the corresponding grid can
be passed through with a cost of certain amount of money, as GDM teoy
has set a toll station.
The grid represented by '#' means that you can not pass it.
It is said that as GDM teoy likes to pee and shit everywhere, this grid is unfortunately damaged by his ugly behavior.
'P'
means it is a transmission port and there may be some in the maze.
These ports( if exist) are connected with each other and Prince ykwd can
jump from one of them to another.
They say that there used to
be some toll stations, but they exploded(surely they didn't exist any
more) because of GDM teoy's savage act(pee and shit!), thus some
wormholes turned into existence and you know the following things.
Remember, Prince ykwd has his mysterious power that he can choose his
way among the wormholes, even he can choose to ignore the wormholes.
Although
Prince ykwd deeply loves Princess claire_, he is so mean that he
doesn't want to spend too much of his money in the maze. Then he turns
up to you, the Great Worker who loves moving bricks, for help and he
hopes you can calculate the minimum money he needs to take his princess
back.
The
1st line contains 3 integers, r, c and cost. 'r', 'c' and 'cost' is as
described above.(0 < r * c <= 5000 and money is in the range of
(0, 10000] )
Then an r * c character matrix with 'P' no more than 10%
of the number of all grids and we promise there will be no toll
stations where the prince and princess exist.
line with an integer, representing the minimum cost. If Prince ykwd
cannot rescue his princess whatever he does, then output "Damn
teoy!".(See the sample for details.)
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
using namespace std;
int n,m,V;
char map[][];
int v[][];
struct node
{
int x,y,ans;
}q[];
int jx[]={,-,,};
int jy[]={,,,-};
void bfs(int xx,int yy)
{
int e=;
int s=;
memset(v,,sizeof(v));
struct node t,f;
t.x=xx;
t.y=yy;
t.ans=;
v[t.x][t.y]=;
q[e++]=t;
while(s<e)
{
t=q[s++];
if(map[t.x][t.y]=='C')
{
printf("%d\n",t.ans);
return ;
}
for(int i=;i<;i++)
{
f.x=t.x+jx[i];
f.y=t.y+jy[i];
if(f.x>=&&f.x<n&&f.y>=&&f.y<m&&map[f.x][f.y]!='#'&&v[f.x][f.y]==)
{
if(map[f.x][f.y]=='*')
{
f.ans=t.ans+V;
q[e++]=f;
v[f.x][f.y]=;
}
else if(map[f.x][f.y]=='C')
{
f.ans=t.ans;
q[e++]=f;
v[f.x][f.y]=;
}
else if(map[f.x][f.y]=='P')
{
for(int j=;j<n;j++)
{
for(int k=;k<m;k++)
{
if(map[j][k]=='P')
{
f.ans=t.ans;
f.x=j;
f.y=k;
q[e++]=f;
v[f.x][f.y]=;
}
}
}
}
}
}
}
printf("Damn teoy!\n");
return ;
}
int main()
{
int xx,yy;
while(scanf("%d%d%d",&n,&m,&V)!=EOF)
{
for(int i=;i<n;i++)
scanf("%*c%s",map[i]);
int j;
for(int i=;i<n;i++)
{
for(j=;j<m;j++)
{
if(map[i][j]=='Y')
{
xx=i;
yy=j;
break;
}
}
if(j!=m) break;
}
bfs(xx,yy);
}
return ;
}