Watermelon - Algorithm

The algorithm is simple once you understand the insight. Here's the step-by-step approach:

$1.$ Read the weight $w$ from input.

$2.$ Check two conditions: is $w > 2$? AND is $w$ even (meaning $w \% 2 == 0$)?

$3.$ If BOTH conditions are true, output YES.

If either fails, output NO. This runs in constant $O(1)$ time since you're just checking two conditions. No loops, no arrays, just two boolean checks combined with AND. Simple problems often have simple solutions.