N, K = map(int, input().split())
if 2 * (K - 1) + 1 <= N:
    print('YES')
else:
    print('NO') N, K = map(int, input().split()) N map(int, input().split()) map int input().split() ().split () input split K if 2 * (K - 1) + 1 <= N:
    print('YES')
else:
    print('NO') 2 * (K - 1) + 1 <= N 2 * (K - 1) + 1 2 * (K - 1) 2 K - 1 K 1 1 N print('YES') print 'YES' print('NO') print '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())
if 2 * (K - 1) + 1 <= N:
    print('YES')
else:
    print('NO')