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

if n%2 == 0:
    cnt = n//2
else:
    cnt = n//2 + 1
    
if cnt >= 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:
    cnt = n//2
else:
    cnt = n//2 + 1
     n%2 == 0 n%2 n 2 0 cnt = n//2 cnt n//2 n 2 cnt = n//2 + 1 cnt n//2 + 1 n//2 n 2 1 if cnt >= k:
    print("YES")
else:
    print("NO") cnt >= k cnt k print("YES") print "YES" print("NO") print "NO" k = map(int,input().split()) map(int,input().split()) k n,k = map(int,input().split()) map(int,input().split()) n cnt = n//2 n//2 cnt cnt = n//2 + 1 n//2 + 1 cnt
n,k = map(int,input().split())

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