## 思路&题解

PC/UVA 110102/10189

水题。看样例输入输出即可明白题意。我的做法是用一个hash直接处理就成

```
//author: CHC
//First Edit Time: 2014-01-10 23:39
//Last Edit Time: 2014-01-10 23:39
//Filename:1.cpp
#include <iostream>
#include <cstdio>
#include <string.h>
#include <queue>
#include <algorithm>
using namespace std;
int n,m;
char map[120][120];
int main()
{
int cas=0;
int flag=0;
while(~scanf("%d%d",&n,&m)&&(n||m))
{
if(flag)puts("");
memset(map,'0',sizeof(map));
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
{
char x;
scanf(" %c",&x);
if(x=='*')
{
map[i][j]='*';
for(int ii=i-1;ii<=i+1;ii++)
for(int jj=j-1;jj<=j+1;jj++)
if(map[ii][jj]!='*')++map[ii][jj];
}
}
printf("Field #%d:\n",++cas);
for(int i=1;i<=n;i++,puts(""))
for(int j=1;j<=m;j++)
putchar(map[i][j]);
flag=1;
}
return 0;
}
```

## Minesweeper

Have you ever played Minesweeper? This cute little game comes with a certain operating system whose name we can’t remember. The goal of

the game is to find where all the mines are located within a M x N field.

The game shows a number in a square which tells you how many mines there are adjacent to that square. Each square has at most eight adjacent squares. The 4 x 4 field on the left contains two mines, each represented by a ‘*’ character. If we represent the same field by the hint numbers described above, we end up with the field on the right:

```
*...
....
.*..
....
*100
2210
1*10
1110
```

### Input

The input will consist of an arbitrary number of fields. The first line of each field contains two integers n and m ( 0 < n, m < 100) which stand for the number of lines and columns of the field, respectively. Each of the next n lines contains exactly m characters, representing the field.

Safe squares are denoted by ‘.’ and mine squares by ‘*’ , both without the quotes. The first field line where n = m = 0 represents the end of input and should not be processed.

### Output

For each field, print the message Field #x: on a line alone, where x stands for the number of the field starting from 1.

The next n lines should contain the field with the ‘.’ characters replaced by the number of mines adjacent to that square. There must be an empty line between field outputs.

### Sample Input

```
4 4
*...
....
.*..
....
3 5
**...
.....
.*...
0 0
```

### Sample Output

```
Field #1:
*100
2210
1*10
1110
Field #2:
**100
33200
1*100
```