PROBLEM LINK:
Practice
Contest: Division 1
Contest: Division 2
Contest: Division 3
Contest: Division 4
Author: raysh07
Tester: sushil2006
Editorialist: iceknight1093
DIFFICULTY:
Cakewalk
PREREQUISITES:
None
PROBLEM:
It takes 30 seconds to cover one slide of a presentation.
Chef has N slides made, how many more does he need to make to have the presentation length be 600 seconds in total?
EXPLANATION:
At 30 seconds per slide, a total of \frac{600}{30} = 20 slides are needed to reach 600 seconds.
So, if N slides are already ready, 20 - N more are needed.
TIME COMPLEXITY:
\mathcal{O}(1) per testcase.
CODE:
Editorialist's code (PyPy3)
n = int(input())
print(20 - n)