n, k = map(int, input().split())
if 2 * k - 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 <= n : print("YES")
else : print("NO") 2 * k - 1 <= n 2 * k - 1 2 * k 2 k 1 n 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 <= n : print("YES")
else : print("NO")
