Hello
I dont understand what I supposed to do in this exercise, I am begining programming constest, if you can help me is very appreciated, I have seen formulas, but I dont understand what to do, I feel very stupid , and for everyone is easy :(
+1
A:
The site seems to be in Russian or English. I'm guessing that neither of these is your first language.
The problem is to pave a rectangular area with square tiles. You are given three values:
- length of the rectangular area
- width of the rectangular area
- size of the tiles (length of a side: remember they are square)
You must write a program that takes the three numbers above as inputs (on the command line) and provide the number of tiles required as output.
Zac Thompson
2010-09-10 18:49:15
how do I obtain the output?, this is my question, the formula
pitt
2010-09-10 18:58:40
That's not really an interpretation problem; it's what you're supposed to figure out for yourself.
Zac Thompson
2010-09-11 18:23:30
A:
One little hint. Suppose that you must cover an axn rectangle with axa stones. Then the solution is "k stones", where ka is the first multiple of a greater than or equal to n. (Draw a picture.)
How to go for k? Do a division and have a look at the documentation of the ceil() function (it is quite standard).
Now what happens if we move to a 2-dimensional problem, i.e. if we have to cover an mxn rectangle? (Draw another picture, do some experiments.)
Federico Ramponi
2010-09-10 22:41:59
You're welcome. Actually it is better to solve the problem without involving floating point numbers or ceil(), that is, doing an _integer_ division and checking the remainder, but the underlying concept is that of "rounding the result up to the next integer".
Federico Ramponi
2010-09-11 08:55:50