### critical input

Posted:

**Sat Nov 01, 2003 4:15 pm**bery olivier you should think about critical inputs. I think you are getting WA for critical inputs.

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Posted: **Sat Nov 01, 2003 4:15 pm**

bery olivier you should think about critical inputs. I think you are getting WA for critical inputs.

Posted: **Tue Mar 30, 2004 9:17 pm**

can anybody help me giving some normal & crical inputs with their outputs

of problem 10499.I don't understand what they mean with

" calculate the profit over the sold price". I solved this problem but got WA. May be i didn't understand the problem.

of problem 10499.I don't understand what they mean with

" calculate the profit over the sold price". I solved this problem but got WA. May be i didn't understand the problem.

Posted: **Wed Mar 31, 2004 12:45 pm**

check your answer for 1.

It should be 0%.

It should be 0%.

Posted: **Thu Apr 01, 2004 8:01 pm**

Can anybody give the outputs of the following inputs

500

1000

200

100

50

1

21781920

10

5

-1

500

1000

200

100

50

1

21781920

10

5

-1

Posted: **Thu Apr 01, 2004 8:45 pm**

12500%

25000%

5000%

2500%

1250%

0%

544548000%

250%

125%

Best regards

DM

25000%

5000%

2500%

1250%

0%

544548000%

250%

125%

Best regards

DM

Posted: **Thu Apr 01, 2004 9:37 pm**

thank you dominic ,

i got some mistakes with my equation. But i have fixed it and got accepted. But i think u have done a printing mistake with the input 5.

Output should be 125%.

i got some mistakes with my equation. But i have fixed it and got accepted. But i think u have done a printing mistake with the input 5.

Output should be 125%.

Posted: **Fri Apr 02, 2004 12:25 pm**

yes, sorry it was typo .... I corrected it ...

Best regards

DM

Best regards

DM

Posted: **Sun Apr 18, 2004 12:54 am**

Greetings!.

Will anyone please tell me what's wrong with my formula?.

Considering the graphic in the example, each Nth piece will have 2 halves of Area of a Circle, and Area of the Sphere / N.

Considering that

Area of a Circle (AC) = Pi*r^2, and

Area of the Sphere (AS) = 4*Pi*r^2 = 4*AC

[ AC = AS/4 ]

then, for each Nth piece, there will be a total Surface of:

2*(AC/2) + AS/N = AC + AS/N

For N pieces, there will be a total Surface of:

N*(AC + AS/N) = N*AC + AS

Now, for the profit:

AS -- 100%

N*AC + AS -- ?%

Therefore, Profit = [(N*AC + AS) * 100] / AS

Profit = [(N*AS/4 + AS) * 100] / AS = [AS*(N/4 + 1)*100]/AS

Profit = (N/4 + 1)*100

Profit = 25*N + 100

And that won't show the right answer

Thanks in advance!.

Will anyone please tell me what's wrong with my formula?.

Considering the graphic in the example, each Nth piece will have 2 halves of Area of a Circle, and Area of the Sphere / N.

Considering that

Area of a Circle (AC) = Pi*r^2, and

Area of the Sphere (AS) = 4*Pi*r^2 = 4*AC

[ AC = AS/4 ]

then, for each Nth piece, there will be a total Surface of:

2*(AC/2) + AS/N = AC + AS/N

For N pieces, there will be a total Surface of:

N*(AC + AS/N) = N*AC + AS

Now, for the profit:

AS -- 100%

N*AC + AS -- ?%

Therefore, Profit = [(N*AC + AS) * 100] / AS

Profit = [(N*AS/4 + AS) * 100] / AS = [AS*(N/4 + 1)*100]/AS

Profit = (N/4 + 1)*100

Profit = 25*N + 100

And that won't show the right answer

Thanks in advance!.

Posted: **Sun Apr 18, 2004 8:36 am**

No.

In this problem they want you to calculate the profit as percentage of the**sell price**, not the buy price. I guess the problemsetter is better in mathematics than in economics

So for the case n=2:

Buy price B = AS

Sell price S = AS + 4*AC = 2*AS

Profit P = 100*(S - B)/S = 100*(2*AS - AS)/(2*AS) = 50%

As in the problem description.

In normal life the answer would be 100% because the sell price is twice the buy price, but in this case the problemsetter is king. But he could have mentioned it in the description.

In this problem they want you to calculate the profit as percentage of the

So for the case n=2:

Buy price B = AS

Sell price S = AS + 4*AC = 2*AS

Profit P = 100*(S - B)/S = 100*(2*AS - AS)/(2*AS) = 50%

As in the problem description.

In normal life the answer would be 100% because the sell price is twice the buy price, but in this case the problemsetter is king. But he could have mentioned it in the description.

Posted: **Sun Apr 18, 2004 9:29 am**

Greetings!.

Thanks little joey!.

Got ACed!.

Really usefull explanation.

Keep posting!.

Thanks little joey!.

Got ACed!.

Really usefull explanation.

Keep posting!.

Posted: **Thu Apr 29, 2004 8:25 am**

little joey,

After Accpeting this problem , i see this post and i am ashtonished. Because my accepted code calculate the profit as percentage of the**buying price**

and my formula almost same as _.B._ described. only differece is that _.B._ calculate the percectage of not only profit but also with it's buying price. that's the reason his all answer is 100% greater than me.

i may be used totally wrong formula. But what was the significant of your 4 time multiplication with AC of your formula little joey.

After Accpeting this problem , i see this post and i am ashtonished. Because my accepted code calculate the profit as percentage of the

and my formula almost same as _.B._ described. only differece is that _.B._ calculate the percectage of not only profit but also with it's buying price. that's the reason his all answer is 100% greater than me.

i may be used totally wrong formula. But what was the significant of your 4 time multiplication with AC of your formula little joey.

Buy price B = AS

Sell price S = AS +4*AC= 2*AS

Posted: **Thu Apr 29, 2004 9:38 am**

Every time you make a cut through the sphere, the area increases by two times the area of the circle (one for every side of the cut). So cutting twice, as in the example I gave, increases the area by four times the area of the circle. If you don't believe me, take an apple and make the cuts

Posted: **Thu Apr 29, 2004 9:53 am**

does N means how many cuts or how many parts?You are given a sequence of integers N (0 < N < 231), indicating the numbers of parts of the sphere.

i think you explained it assuming N as cuts.

if n means how many parts?? then what should be the explanation?

i may still wrong.

please clear it to me.[/quote]

Posted: **Thu Apr 29, 2004 10:13 am**

This makes me look stupid, doesn't it? It means parts, not cuts, something I was convinced of...

Forget all of my previous postings. They are wrong. Sorry to the problemsetter. But at least _.B._ got accepted...

Forget all of my previous postings. They are wrong. Sorry to the problemsetter. But at least _.B._ got accepted...

Posted: **Thu Apr 29, 2004 11:41 am**

that does not matter boss.

yeh _.B._ have got acc for your post.....

i like your apple theory

yeh _.B._ have got acc for your post.....

i like your apple theory