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컴퓨터/Data Structure/Algorithm

[Programming Challege] 1.6.5 Graphical Editor

1.6.5 Graphical Editor

PC/UVa IDs: 110105/10267, Popularity: B, Success rate: low Level: 1

Graphical editors such as Photoshop allow us to alter bit-mapped images in the same

way that text editors allow us to modify documents. Images are represented as anM×N

array of pixels, where each pixel has a given color.

Your task is to write a program which simulates a simple interactive graphical editor.


Input

The input consists of a sequence of editor commands, one per line. Each command is

represented by one capital letter placed as the first character of the line. If the command

needs parameters, they will be given on the same line separated by spaces.

Pixel coordinates are represented by two integers, a column number between 1 . . . M

and a row number between 1 . . . N, where 1 ≤ M,N ≤ 250. The origin sits in the

upper-left corner of the table. Colors are specified by capital letters.

The editor accepts the following commands:

I M N Create a new M ×N image with all pixels initially colored

white (O).

C Clear the table by setting all pixels white (O). The size

remains unchanged.

L X Y C Colors the pixel (X, Y ) in color (C).

V X Y1 Y2 C Draw a vertical segment of color (C) in column X, between

the rows Y 1 and Y 2 inclusive.

H X1 X2 Y C Draw a horizontal segment of color (C) in the row Y ,

between the columns X1 and X2 inclusive.

K X1 Y1 X2 Y2 C Draw a filled rectangle of color C, where (X1, Y 1) is the

upper-left and (X2, Y 2) the lower right corner.

F X Y C Fill the region R with the color C, where R is defined as

follows. Pixel (X, Y ) belongs to R. Any other pixel which

is the same color as pixel (X, Y ) and shares a common side

with any pixel in R also belongs to this region.

S Name Write the file name in MSDOS 8.3 format followed by the

contents of the current image.

X Terminate the session.


Output

On every command S NAME, print the filename NAME and contents of the current

image. Each row is represented by the color contents of each pixel. See the sample

output.

Ignore the entire line of any command defined by a character other than I, C, L,

V, H, K, F, S, or X, and pass on to the next command. In case of other errors, the

program behavior is unpredictable.


Sample Input

I 5 6

L 2 3 A

S one.bmp

G 2 3 J

F 3 3 J

V 2 3 4 W

H 3 4 2 Z

S two.bmp

X


Sample Output

one.bmp

OOOOO

OOOOO

OAOOO

OOOOO

OOOOO

OOOOO

two.bmp

JJJJJ

JJZZJ

JWJJJ

JWJJJ

JJJJJ

JJJJJ