At 17:00, special agent Jack starts to escape from the enemy camp. There is a cliff in between the camp and the nearest safety zone. Jack has to climb the almost vertical cliff by stepping his feet on the blocks that cover the cliff. The cliff has slippery blocks where Jack has to spend time to take each step. He also has to bypass some blocks that are too loose to support his weight. Your mission is to write a program that calculates the minimum time to complete climbing.
Figure D-1 shows an example of cliff data that you will receive. The cliff is covered with square blocks. Jack starts cliff climbing from the ground under the cliff, by stepping his left or right foot on one of the blocks marked with 'S' at the bottom row. The numbers on the blocks are the "slippery levels". It takes t time units for him to safely put his foot on a block marked with t, where 1 <= t <= 9. He cannot put his feet on blocks marked with 'X'. He completes the climbing when he puts either of his feet on one of the blocks marked with 'T' at the top row.
Jack"s movement must meet the following constraints. After putting his left (or right) foot on a block, he can only move his right (or left, respectively) foot. His left foot position (lx, ly) and his right foot position (rx, ry) should satisfy lx <rx and | lx - rx | + | ly - ry | <= 3. This implies that, given a position of his left foot in Figure D-2 (a), he has to place his right foot on one of the nine blocks marked with blue color. Similarly, given a position of his right foot in Figure D-2 (b), he has to place his left foot on one of the nine blocks marked with blue color.
Figure D-2: Possible Placements of Feet
Input
The input is a sequence of datasets. The end of the input is indicated by a line containing two zerZ喎?http://www.Bkjia.com/kf/ware/vc/" target="_blank" class="keylink">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"S': Jack can start cliff climbing from this block.'T': Jack finishes climbing when he reaches this block.'X': Jack cannot put his feet on this block.'1' - '9' (= t): Jack has to spend t time units to put either of his feet on this block.
You can assume that it takes no time to put a foot on a block marked with 'S' or 'T'.
Output
For each dataset, print a line only having a decimal integer indicating the minimum time required for the cliff climbing, when Jack can complete it. Otherwise, print a line only having "-1" for the dataset. Each line should not have any characters other than these numbers.
Sample Input
6 6 4 4 X X T T 4 7 8 2 X 7 3 X X X 1 8 1 2 X X X 6 1 1 2 4 4 7 S S 2 3 X X 2 10 T 1 1 X 1 X 1 X 1 1 1 X 1 X 1 1 1 X S S 2 10 T X 1 X 1 X 1 X 1 1 1 X 1 X 1 1 1 X S S 10 10 T T T T T T T T T T X 2 X X X X X 3 4 X 9 8 9 X X X 2 9 X 9 7 7 X 7 3 X X 8 9 X 8 9 9 9 6 3 X 5 X 5 8 9 9 9 6 X X 5 X 5 8 6 5 4 6 8 X 5 X 5 8 9 3 9 6 8 X 5 X 5 8 3 9 9 6 X X X 5 X S S S S S S S S S S 10 7 2 3 2 3 2 3 2 3 T T 1 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 4 3 2 3 2 3 2 3 2 3 5 3 2 3 1 3 2 3 2 3 5 2 2 3 2 4 2 3 2 3 5 S S 2 3 2 1 2 3 2 3 0 0
Sample Output
12 5 -1 22 12
#include"stdio.h"
#include"string.h"
#include"vector"
#include"queue"
#include"iostream"
#include"algorithm"
using namespace std;
#define N 105
const int inf=(int)1e10;
int w,h,ans;
char e[N][N];
int mark1[N][N],mark2[N][N]; //記錄左右腳走到某一點時的最小時間
struct node
{
int x,y,t,f; //f記錄走到該點是左腳（-1）還是右腳（1）
};
bool judge(int x,int y) //判斷該點是否能走
{
if(x>=0&&x=0&&yq;
node cur,next;
cur.t=0;
for(i=0;i=mark1[u][v])
continue;
next.x=u;
next.y=v;
mark1[u][v]=next.t;
q.push(next);
}
}
}
}
}
if(cur.f==-1)
{
next.f=1;
for(i=-2;i<=2;i++)
{
for(j=1;j<=3;j++)
{
if(abs(i)+abs(j)<=3)
{
u=x+i;v=y+j;
if(judge(u,v))
{
if(e[u][v]=='T')
{
ans=min(ans,cur.t);
//printf("%d\n",ans);
continue;
}
next.t=cur.t+e[u][v]-'0';
if(next.t>=mark2[u][v])
continue;
next.x=u;
next.y=v;
mark2[u][v]=next.t;
q.push(next);
}
}
}
}
}
}
}
int main()
{
int i,j;
while(scanf("%d%d",&w,&h),w||h)
{
for(i=0;i>e[i][j];
mark1[i][j]=mark2[i][j]=inf;
}
}
ans=inf;
spfa();
if(ans>=inf)
printf("-1\n");
else
printf("%d\n",ans);
}
return 0;
}
