Minesweeper

AtCoder

IDabc075_b

Time2000ms

Memory256MB

Difficulty—

You are given an $H × W$ grid. The squares in the grid are described by $H$ strings, $S_1,...,S_H$. The $j$\-th character in the string $S_i$ corresponds to the square at the $i$\-th row from the top and $j$\-th column from the left $(1 \leq i \leq H,1 \leq j \leq W)$. `.` stands for an empty square, and `#` stands for a square containing a bomb. Dolphin is interested in how many bomb squares are horizontally, vertically or diagonally adjacent to each empty square. (Below, we will simply say "adjacent" for this meaning. For each square, there are at most eight adjacent squares.) He decides to replace each `.` in our $H$ strings with a digit that represents the number of bomb squares adjacent to the corresponding empty square. Print the strings after the process. ## Constraints * $1 \leq H,W \leq 50$ * $S_i$ is a string of length $W$ consisting of `#` and `.`. ## Input Input is given from Standard Input in the following format: $H$ $W$ $S_1$ $:$ $S_H$ [samples]

Samples

Input #1

3 5
.....
.#.#.
.....

Output #1

11211
1#2#1
11211

For example, let us observe the empty square at the first row from the top and first column from the left.  
There is one bomb square adjacent to this empty square: the square at the second row and second column.  
Thus, the `.` corresponding to this empty square is replaced with `1`.

Input #2

3 5
#####
#####
#####

Output #2

#####
#####
#####

It is possible that there is no empty square.

Input #3

6 6
#####.
#.#.##
####.#
.#..#.
#.##..
#.#...

Output #3

#####3
#8#7##
####5#
4#65#2
#5##21
#4#310

API Response (JSON)

{
  "problem": {
    "name": "Minesweeper",
    "description": {
      "content": "You are given an $H × W$ grid.   The squares in the grid are described by $H$ strings, $S_1,...,S_H$.   The $j$\\-th character in the string $S_i$ corresponds to the square at the $i$\\-th row from the ",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc075_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "You are given an $H × W$ grid.  \nThe squares in the grid are described by $H$ strings, $S_1,...,S_H$.  \nThe $j$\\-th character in the string $S_i$ corresponds to the square at the $i$\\-th row from the ...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments