PROBLEM LINK:
Practice
Contest: Division 1
Contest: Division 2
Contest: Division 3
Contest: Division 4
Author: iceknight1093
Tester: nskybytskyi
Editorialist: iceknight1093
DIFFICULTY:
Cakewalk
PREREQUISITES:
None
PROBLEM:
Chef gets one extra t-shirt for every 2 he buys.
If he buys X t-shirts (X is even), how many t-shirts does he have in total?
EXPLANATION:
Every 2 out of the X t-shirts will give one extra.
So, Chef will receive \frac{X}{2} free t-shirts.
The total number of t-shirts is thus
X + \frac{X}{2}
TIME COMPLEXITY:
\mathcal{O}(1) per testcase.
CODE:
Author's code (python)
x = int(input())
print(x + x/2)