Codeforces 4A: Watermelon

#python #cpp #algorithms #codeforces

It's easy to see that odd number cannot be sum of two even numbers because sum of two even numbers is even.
On the other hand, even number can always be split into two positive even numbers except 2 because zero is not positive.

Problem statement:
https://codeforces.com/contest/4/problem/A

Python

def solve(weight):
    if weight > 2 and weight % 2 == 0:
        print("YES")
    else:
        print("NO")

w = int(input())
solve(w)

C++

#include <iostream>
using namespace std;

int main() {
    int w;
    cin >> w;
    if (w > 2 && w % 2 == 0) {
        cout << "YES" << endl;
    } else {
        cout << "NO" << endl;
    }
    return 0;
}