Shortest Solution in Python 3 for Caught Speeding - CodingBat

4

I am trying to find the shortest code in python 3, to solve this problem:

You are driving a little too fast, and a police officer stops you.

Write code to take two integer inputs, first one corresponds to speed, seconds one is either 1 or 0, corresponding to True and False respectively to indicate whether it is birthday. Then compute the result, encoded as an int value:

0=no ticket,

1=small ticket,

2=big ticket.

If speed is 60 or less, the result is 0. If speed is between 61 and 80 inclusive, the result is 1. If speed is 81 or more, the result is 2. Unless it is your birthday -- on that day, your speed can be 5 higher in all cases.

input:
60
0
Output:
0

input:
65
0
Output:
1

input:
65
1
output:
0

Here's my shortest solution (57 chars). Is there any way I can make it shorter in Python?

print(min(2,max(0,(int(input())-5*int(input())-41)//20)))

Reference: Problem inspired from this

Sayandip Dutta

Posted 2020-01-06T06:23:28.397

Reputation: 151

@JoKing I did not know, I will add tips tag. Not sure if I want this to become a competition. If you recommend I can add code-golf as well. – Sayandip Dutta – 2020-01-06T06:29:14.563

1What's the range of possible speeds? I think this can have a big effect on what shortcuts are possible. – xnor – 2020-01-06T06:57:50.327

It would be @xnor 0 to 199 – Sayandip Dutta – 2020-01-06T06:59:52.410

Does it have to be in Python 3, or is Python 2 fine as well? I think Python 2 could save quite a number of bytes. – xnor – 2020-01-06T07:07:22.353

Python 3. Will add this in the question/tags. – Sayandip Dutta – 2020-01-06T07:10:12.993

@xnor but I will be interested if there's anything other than input that can save bytes in python 2. – Sayandip Dutta – 2020-01-06T07:11:55.513

1Other than input and print without parens, Python 2 has cmp, which should let you do your method without the min/max clamping. – xnor – 2020-01-06T07:14:29.113

Answers

14

Python 3, 32 bytes

lambda a,b:(a-b*5>60)+(a-b*5>80)

Try it online!


Python 3, 50 bytes

If io must be done with stdin and stdout

s=int(input())-5*int(input());print((s>60)+(s>80))

Try it online!

Mukundan

Posted 2020-01-06T06:23:28.397

Reputation: 1 188

Ah! Beautiful! Thanks! Would accept in a while. – Sayandip Dutta – 2020-01-06T07:00:41.593

Save some characters by doing i=input; (-3) and then later i() (+8) for a total of +5 characters saved. – LMD – 2020-01-06T23:14:43.760

1Do you mean like i=input;s=int(i())-5*int(i());print((s>60)+(s>80))? – Mukundan – 2020-01-07T03:07:27.197

@LMD could you show what you did? I tried this yesterday, couldn't shrink below 50 bytes. – Sayandip Dutta – 2020-01-07T06:31:06.503

@SayandipDutta, yeah, like Mukundan showed – LMD – 2020-01-07T16:02:03.530

@LMD The code I showed still uses 50 bytes – Mukundan – 2020-01-08T02:32:06.873

@Mukundan yeah, my fault – LMD – 2020-01-08T21:11:44.560

2

Python 3, 51 bytes

lambda a,b:(min(2,max(0,(int(a)-5*int(b)-41)//20)))

Try it online!

I was able to shave 6 bytes from your approach by using everyone's favourite python golfing keyword: lambda.

This turns your program into an anonymous function, which then can be called in the footer of a program.

Lyxal

Posted 2020-01-06T06:23:28.397

Reputation: 5 253

Thanks. But need to take input, and print as well. Meant to be a script, can't eval on repl :\ – Sayandip Dutta – 2020-01-06T06:43:06.033

@SayandipDutta Functions are usually considered valid responses here – famous1622 – 2020-01-07T13:35:27.437

I'm sure they are. It's just that it didn't suit my usecase. I hope you understand :) – Sayandip Dutta – 2020-01-07T19:56:30.807