from math import ceil

N,K=map(int,input().split())
print("YES" if ceil(N/2)>=K else "NO") from math import ceil N,K=map(int,input().split()) N map(int,input().split()) map int input().split() ().split () input split K print("YES" if ceil(N/2)>=K else "NO") print "YES" if ceil(N/2)>=K else "NO" ceil(N/2)>=K ceil(N/2) ceil N/2 N 2 K "YES" "NO" K=map(int,input().split()) map(int,input().split()) K N,K=map(int,input().split()) map(int,input().split()) N
from math import ceil

N,K=map(int,input().split())
print("YES" if ceil(N/2)>=K else "NO")
