# PROBLEM LINK:

Setter: Lavish Gupta
Tester: Felipe Mota, Abhinav Sharma
Editorialist: Pratiyush Mishra

351

None

# PROBLEM:

Finally, after purchasing a water cooler during the April long challenge, Chef noticed that his water cooler requires 2 liters of water to cool for one hour.

How much water (in liters) would be required by the cooler to cool for N hours?

# EXPLANATION:

Since it is given that it requires 2 litres to cool for 1 hour, therefore we can say that for N hours it would take 2N litres of water.
Thus,

answer = 2 \times N

# TIME COMPLEXITY:

O(1) for each test case.