n, k = map(int, input().split())
print('YES' if (n+1)/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+1)/2 >= k else 'NO') print 'YES' if (n+1)/2 >= k else 'NO' (n+1)/2 >= k (n+1)/2 n+1 n 1 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+1)/2 >= k else 'NO')
