N,K=map(int,input().split())
print('YES' if -(-N//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 -(-N//2)>=K else 'NO') print 'YES' if -(-N//2)>=K else 'NO' -(-N//2)>=K -(-N//2) -N//2 -N N 2 K 'YES' 'NO' K=map(int,input().split()) map(int,input().split()) K N,K=map(int,input().split()) map(int,input().split()) N
N,K=map(int,input().split())
print('YES' if -(-N//2)>=K else 'NO')