CCC '05 J1 - The Cell Sell - DMOJ: Modern Online Judge

CCC '05 J1 - The Cell Sell

Points: 3

Time limit: 2.0s

Memory limit: 64M

Problem type

Canadian Computing Competition: 2005 Stage 1, Junior #1

Moe Bull has a cell phone and after a month of use is trying to decide which price plan is the best for his usage pattern. He has two options, each plan has different costs for daytime minutes, evening minutes and weekend minutes.

Plan	Costs
Plan	daytime	evening	weekend
A	100 free minutes then 25 cents per minute	15 cents per minute	20 cents per minute
B	250 free minutes then 45 cents per minute	35 cents per minute	25 cents per minute

Write a program that will input the number of each type of minutes and output the cheapest plan for this usage pattern, using the format shown below. The input will be in the order of daytime minutes, evening minutes and weekend minutes. In the case that the two plans are the same price, output both plans.

Sample Input 1

251
10
60

Sample Output 1

Plan A costs 51.25
Plan B costs 18.95
Plan B is cheapest.

Sample Input 2

162
61
66

Sample Output 2

Plan A costs 37.85
Plan B costs 37.85
Plan A and B are the same price.

CCC problem statements in large part from the PEG OJ

Comments

2

asofjsaoihf commented on April 2, 2021, 3:37 p.m.

I dont really care if this comment gets taken down or anything but please can somebody help me?

2

iWolf22 commented on Nov. 18, 2020, 8:36 p.m.

Could someone help me with my code? I am starting C# from python and I am puzzled as to why I am correct for the second test but not the first or third? Any help would be greatly appreciated! :)

2

Case commented on Nov. 26, 2020, 7:19 p.m. ← edit 2 →

A problem I had when writing the code was allowing the daytime cost to be less than zero. Since it = daytime minutes - 100 or 250 * the cost per minute, if the daytime minutes are less than 100 or 250 that term will become negative.

1

DavidE commented on Oct. 6, 2020, 9:18 p.m.

The problem I had was that I wasn't outputting only two decimal places, one of the tests is to input all three variables as 0 and if you don't output 0.00 for the first two outputs, you won't even get a single mark, If you think this is the problem for you and you are using Java use this link,

https://www.java67.com/2014/06/how-to-format-float-or-double-number-java-example.html#:~:text=format(%22%25.,float%20data%20type%20in%20Java.

if you aren't using java search up number formats for two decimal places for your language, this simple fix got me from 0 points from all tests to 100%.

2

Evang commented on March 22, 2020, 9:10 p.m.

Remember: for each of the plans, it's some_value cents/minute. The output prices for each of the plans should be in dollars :)

-5

Anoojen643_VP commented on Feb. 26, 2020, 10:56 p.m.

wth my program runs perfectly but i counts it as wrong what is the word for word output? also can anyone tell me the test code so i can try this out for my self

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0

wleung_bvg commented on Dec. 8, 2019, 8:06 a.m.

Pleas refrain from spamming the submit button when the judges are broken. If it got Internal Error 3 minutes ago, and 2 minutes ago, and 1 minute ago, you might want to consider waiting a while before resubmitting.

-5

WEAVER commented on May 13, 2019, 6:49 p.m.

Im new to programming, Can someone help I do this problem

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15

saysuhayl commented on Oct. 14, 2018, 12:31 a.m.

Spent 20 mins debugging because the output is worded "Plan B is cheapest." vs "Plan B is the cheapest." which is proper grammar.

-13

Arihan10 commented on Feb. 23, 2019, 7:19 p.m.

This is why the Copy button exists.

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11

Summertony717 commented on Feb. 23, 2019, 3:06 p.m.

Only 20 min? Good job, that would have taken me hours.

-3

Epic1Online commented on Oct. 30, 2017, 5:11 p.m. ← edit 2 →

Are compile errors due to bad code? Because my code works on my laptop but I get a compile error when submitting. The same thing happened for another problem but I resubmitted and it worked but that's not fixing the error here.

EDIT: I fixed it by using Math.round() instead of DecimalFormat, but I don't see why DecimalFormat shouldn't work (Java 8)

8

injust commented on Oct. 30, 2017, 6:41 p.m.

You may want to import java.text.DecimalFormat.

1

Selena_Liu commented on July 12, 2017, 12:51 a.m.

I don't get why my first case is wrong. They are the same price, aren't they?

8

injust commented on July 12, 2017, 3:35 a.m.

Your program prints Plan A and Plan B are the same price. when the plans cost the same amount.

-10

lolzballs commented on March 18, 2015, 1:16 p.m.

Is "Plan A is cheapest" correct grammar? I spent a while debugging my code because of this. I put "Plan A is the cheapest" instead.

And then I 'fixed' it to "Plan A is cheaper".

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4

HyperNeutrino commented on Feb. 23, 2019, 5:51 p.m.

"Plan A is cheap"

"Plan A is cheaper"

...

Both are correct; cheapest is an adjective but it's a superlative so you can also stick a definitive article (i.e. "the") in front of it and treat is as though it were a noun.

3

FatalEagle commented on March 18, 2015, 1:17 p.m.

How correct the grammar is doesn't matter; it's simply the output specifications.

-2

Hunterdrago1 commented on Oct. 18, 2014, 6:31 p.m.

Plan A costs 37.85 Plan B costs 37.849999999999994 Plan B is cheapest.

-7

FatalEagle commented on Nov. 1, 2014, 12:17 a.m.

We are dealing with exact real numbers in this problem.

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-7

Miss commented on Nov. 19, 2014, 2:05 p.m.

Meaning rounding is or isn't allowed?

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-6

FatalEagle commented on Nov. 19, 2014, 6:47 p.m.

The answer must be to exactly 2 decimal places. The constraints are such that the correct answer will not have any nonzero digits after and including the third decimal place.

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3

Zhenpai commented on Oct. 7, 2014, 9:41 p.m.

I think there's a problem with your problem, and I have a problem with that.

12

quantum commented on Oct. 7, 2014, 10:22 p.m.

There is no problem with this problem.