n, k = map(int, input().split())
print("YES" if 1 + (n - 1) / 2 >= k else "NO") n, k = map(int, input().split()) n map(int, input().split()) map int input().split() ().split () input split k print("YES" if 1 + (n - 1) / 2 >= k else "NO") print "YES" if 1 + (n - 1) / 2 >= k else "NO" 1 + (n - 1) / 2 >= k 1 + (n - 1) / 2 1 (n - 1) / 2 n - 1 n 1 2 k "YES" "NO" n, k = map(int, input().split()) map(int, input().split()) n k = map(int, input().split()) map(int, input().split()) k
n, k = map(int, input().split())
print("YES" if 1 + (n - 1) / 2 >= k else "NO")