📄 problem - 1010.mht
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Subject: Problem - 1010
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<H1 style=3D"COLOR: #1a5cc8">Tempter of the Bone</H1><FONT =
size=3D+0><B><SPAN=20
style=3D"FONT-WEIGHT: bold; FONT-SIZE: 12px; COLOR: green; =
FONT-FAMILY: Arial">Time=20
Limit: 2000/1000 MS (Java/Others) Memory =
Limit:=20
65536/32768 K (Java/Others)<BR>Total Submission(s):=20
4551 Accepted Submission(s):=20
1232<BR></SPAN></B></FONT><BR><BR>
<DIV class=3Dpanel_title align=3Dleft>Problem Description</DIV>
<DIV class=3Dpanel_content>The doggie found a bone in an ancient =
maze, which=20
fascinated him a lot. However, when he picked it up, the maze =
began to=20
shake, and the doggie could feel the ground sinking. He realized =
that the=20
bone was a trap, and he tried desperately to get out of this=20
maze.<BR><BR>The maze was a rectangle with sizes N by M. There was =
a door=20
in the maze. At the beginning, the door was closed and it would =
open at=20
the T-th second for a short period of time (less than 1 second). =
Therefore=20
the doggie had to arrive at the door on exactly the T-th second. =
In every=20
second, he could move one block to one of the upper, lower, left =
and right=20
neighboring blocks. Once he entered a block, the ground of this =
block=20
would start to sink and disappear in the next second. He could not =
stay at=20
one block for more than one second, nor could he move into a =
visited=20
block. Can the poor doggie survive? Please help him.<BR></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Input</DIV>
<DIV class=3Dpanel_content>The input consists of multiple test =
cases. The=20
first line of each test case contains three integers N, M, and T =
(1 <=20
N, M < 7; 0 < T < 50), which denote the sizes of the maze =
and the=20
time at which the door will open, respectively. The next N lines =
give the=20
maze layout, with each line containing M characters. A character =
is one of=20
the following:<BR><BR>'X': a block of wall, which the doggie =
cannot enter;=20
<BR>'S': the start point of the doggie; <BR>'D': the Door; =
or<BR>'.': an=20
empty block.<BR><BR>The input is terminated with three 0's. This =
test case=20
is not to be processed.<BR></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Output</DIV>
<DIV class=3Dpanel_content>For each test case, print in one line =
"YES" if=20
the doggie can survive, or "NO" otherwise.<BR></DIV>
<DIV class=3Dpanel_bottom> </DIV><BR>
<DIV class=3Dpanel_title align=3Dleft>Sample Input</DIV>
<DIV class=3Dpanel_content><PRE>4 4 5
S.X.
..X.
..XD
....
3 4 5
S.X.
..X.
...D
0 0 0</PRE></DIV>
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