N, K = list(map(int, input().split()))
print("YES" if (N+1) // 2 >= K else "NO") N, K = list(map(int, input().split())) N list(map(int, input().split())) list map(int, input().split()) map int input().split() ().split () input split K print("YES" if (N+1) // 2 >= K else "NO") print "YES" if (N+1) // 2 >= K else "NO" (N+1) // 2 >= K (N+1) // 2 N+1 N 1 2 K "YES" "NO" K = list(map(int, input().split())) list(map(int, input().split())) K N, K = list(map(int, input().split())) list(map(int, input().split())) N
N, K = list(map(int, input().split()))
print("YES" if (N+1) // 2 >= K else "NO")