Just Solve It

#include <iostream>

using namespace std;
typedef long long ll;

ll n, k;

void no() {
    cout << "NO\n";
    exit(0);
}

void yes() {
    cout << "YES\n";
    exit(0);
}

int main() {
    cin >> n >> k;
    if (k == 1) no();
    if (n%2 == 0) {
        if (k >= 2) yes();
        else no();
    }
    else {
        if (k >= 3) yes();
        else no();
    }
    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED