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

if n%2==0: mx=n//2
else: mx=n//2+1

if mx>=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 if n%2==0: mx=n//2
else: mx=n//2+1 n%2==0 n%2 n 2 0 if mx>=k: print('YES')
else: print('NO') mx>=k mx k 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 n%2==0: mx=n//2
else: mx=n//2+1

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