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' 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())
print('YES' if -(-n//2)>=k else 'NO')