N, K = [int(i) for i in input().split()]
print('YES' if sum(divmod(N, 2)) >= K else 'NO') int(i) for i in input().split() for i in input().split() i input().split() ().split () input split for i in input().split() int(i) int i N, K = [int(i) for i in input().split()] N [int(i) for i in input().split()] K print('YES' if sum(divmod(N, 2)) >= K else 'NO') print 'YES' if sum(divmod(N, 2)) >= K else 'NO' sum(divmod(N, 2)) >= K sum(divmod(N, 2)) sum divmod(N, 2) divmod N 2 K 'YES' 'NO' K = [int(i) for i in input().split()] [int(i) for i in input().split()] K N, K = [int(i) for i in input().split()] [int(i) for i in input().split()] N
N, K = [int(i) for i in input().split()]
print('YES' if sum(divmod(N, 2)) >= K else 'NO')