Could anyone tell me why test case 4 Is showing error in code coach problem named "Land Ho!"???I am not a pro user!

Question

people=int(input())
if people<20:
print(10)
elif people>=20 and people%10==0:
print(people+10)
elif people>=20 and people%10!=0:
if round(people,-1)<people:
print((round(people,-1))+10)
else:
print(round(people,-1))

Answer 1

If there are 30 people, then you're saying the wait time is 40 mins?

Answer 2

Then your logic is incorrect.
First 20 people leave and the boat returns = 20 mins.
I can go on the second boat, so I leave with the second group = 10 mins
Total = 30 mins

Answer 3

The boat can take groups of 20 people. Each group needs to wait 10 minutes to get there.
Group 1 [20] = 10 mins
Group 2 [40] = 30 mins
Group 3 [60] = 50 mins
Group n [n*20] = n*20-10mins

Answer 4

Well done Vaibhav Pandey I'm happy you got there

Answer 5

Vaibhav Pandey , I'm write this code very simple:
people=int(input())
if people <=20:
print(10)
else:
wait=(people//20)*20+10
print(wait)

Answer 6

Ausgrindtube yes bro

Answer 7

Ausgrindtube how is this incorrect bro i didn't understand??

Answer 8

Ausgrindtube nah bro u see test case 2 is not matching your code the input in test case 2 is 80 and output is 90 whereas in your code if i input 80 it will be 70.

Answer 9

Ausgrindtube done bro i did it
people=int(input())
if people<20:
print(10)
elif people>=20 and people%20==0:
print(people+10)
elif people>=20 and people%20!=0 and people%10==0:
print(people)
elif people>=20 and people%20!=0 and people%10!=0:
if round(people,-1)<people and round(people,-1)%20==0:
print(round(people,-1)+10)
elif round(people,-1)>people and round(people,-1)%20==0:
print(round(people,-1)+10)
elif round(people,-1)>people and round(people,-1)%20!=0:
print(round(people,-1))
elif round(people,-1)<people and round(people,-1)%20!=0:
print(round(people,-1))