BITMAP - Bitmap
There is given a rectangular bitmap of size n*m. Each pixel of the bitmap is either white or black, but at least one is white. The pixel in i-th line and j-th column is called the pixel (i,j). The distance between two pixels p1=(i1,j1) and p2=(i2,j2) is defined as:
Write a program which:
- reads the description of the bitmap from the standard input,
- for each pixel, computes the distance to the nearest white pixel,
- writes the results to the standard output.
The number of test cases t is in the first line of input, then t test cases follow separated by an empty line. In the first line of each test case there is a pair of integer numbers n, m separated by a single space, 1<=n <=182, 1<=m<=182. In each of the following n lines of the test case exactly one zero-one word of length m, the description of one line of the bitmap, is written. On the j-th position in the line (i+1), 1 <= i <= n, 1 <= j <= m, is '1' if, and only if the pixel (i,j) is white.
In the i-th line for each test case, 1<=i<=n, there should be written m integers f(i,1),...,f(i,m) separated by single spaces, where f(i,j) is the distance from the pixel (i,j) to the nearest white pixel.
Sample input: 1 3 4 0001 0011 0110 Sample output: 3 2 1 0 2 1 0 0 1 0 0 1
Weird. Declaring 2D char array inside main gives RE and declaring it globally gives AC. o_O
My first bfs question ^_^
cakewalk, totally flooded it...
with simple bfs AC modifies code a bit series of RE comes _/\_Last edit: 2016-07-09 21:53:48
finally AC after a TLE...now in 0.08!!
USE BFS AC in 1 GO(0.06s)
My Second BFS =D
solved in execution time 3.69.. god knows how the top solution execution's time is 0.00 .. crazy..
Code ran in 1 go on my system w/o any debugging and then AC in 1 go :D Feels great!
AC using brute force!! 3.07 secs :)