Stuck with the Halloween Candy Challenge

Question

I solved the challenge (https://sololearn.com/coach/4/?ref=app) and it passes the first two sample data, but it won’t pass the last three. As the input in the last 3 is hidden, I don’t know what’s wrong with my code. Here’s the code:

houses = int(input())

#your code goes here
result=200/houses
print((round(result))

If you would help me out, I’d really appreciate it.
Thanks, guys!!

Answer 1

Instead of round()

use

import math

math.ceil()

round(result) ❌
math.ceil(result) ✔️

Answer 2

Juan Macarlupu According to problem we need most nearest whole number so in this case ceil will work fine because round just give round off valve means 5.4 will be 5 and 5.6 will be 6 but when we use ceil we get only one value that is 6. So

round (5.4) = 5
round (5.6) = 6

but

ceil (5.4) = 6
ceil (5.6) = 6

that is what we need in this problem.

Answer 3

Thanks! would you mind briefly explaining why? I really appreciate your help!

Answer 4

just found this:

Math.ceil( ) computes the ceiling function—i.e., it returns the closest integer value that is greater than or equal to the function argument. Math.ceil( ) differs from Math.round( ) in that it always rounds up, rather than rounding up or down to the closest integer. Also note that Math.ceil( ) does not round negative numbers to larger negative numbers; it rounds them up toward zero.

in https://www.oreilly.com/library/view/javascript-the-definitive/0596101996/re106.html

Answer 5

Juan Macarlupu I think the problem is that round() rounds down as well...

print(round(3.33)) # 3
print(math.ceil(3.33)) # 4

in the above example, round() will round the 3.33 down to give 3
But math.ceil() will give the next greatest integer after 3 that is 4.

so

print(round(3.001))
will give 3

but

print(math.ceil(3.001))
will give 4

Answer 6

Thanks so much!!

Answer 7

For C# guys the Method name is Math.Ceiling not Math.ceil !