n, k = map(int, input().split())

x = [i for i in range(1, n+1)][::2]

if len(x) >= k:
    print('YES')
else:
    print('NO') n, k = map(int, input().split()) n map(int, input().split()) map int input().split() ().split () input split k i for i in range(1, n+1) for i in range(1, n+1) i range(1, n+1) range 1 n+1 n 1 for i in range(1, n+1) i x = [i for i in range(1, n+1)][::2] x [i for i in range(1, n+1)][::2] [i for i in range(1, n+1)] ::2 2 if len(x) >= k:
    print('YES')
else:
    print('NO') len(x) >= k len(x) len x k print('YES') print 'YES' print('NO') print 'NO' k = map(int, input().split()) map(int, input().split()) k x = [i for i in range(1, n+1)][::2] [i for i in range(1, n+1)][::2] x n, k = map(int, input().split()) map(int, input().split()) n
n, k = map(int, input().split())

x = [i for i in range(1, n+1)][::2]

if len(x) >= k:
    print('YES')
else:
    print('NO')