A1298 | $[COCI-2013_2014-contest3]#3 OKVIR$

来源COCI

时间限制1s

内存限制128MB

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题目描述

Mirko has assembled an excellent crossword puzzle and now he wants to frame it. Mirko's crossword puzzle consists of M x N letters, and the frame around it should be U characters wide on top, L characters on the left, R characters on the right and D characters on the bottom side. The frame consists of characters # (hash) and . (dot) which alternate like fields on a chessboard. These characters should be arranged in a way that, if the frame is expanded to cover the entire crossword puzzle and we treat these characters as a chessboard, the # characters should be placed as the red fields on a chessboard (i.e. the top left field). See the examples below for a better understanding of the task.

The first line of input contains two integers M and N (1 \leq M, N \leq 10). The second line of input contains integers U, L, R, D (0 \leq U, L, R, D \leq 5). The following M lines of input contains N characters - lowercase letters of the English alphabet. These lines represent Mirko's crossword puzzle.

Output the framed crossword puzzle as stated in the text.

输入 #1

4 4 
2 2 2 2 
honi 
oker 
nera 
irak

输出 #1

#.#.#.#. 
.#.#.#.# 
#.honi#. 
.#oker.# 
#.nera#. 
.#irak.# 
#.#.#.#. 
.#.#.#.#

输入 #2

2 4 
1 0 3 1 
rima 
mama

输出 #2

#.#.#.# 
rima.#. 
mama#.# 
.#.#.#.

C++ 编辑器

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