n,k=map(int,input().split())
print(("NO","YES")[(n+1)//2>=k]) n,k=map(int,input().split()) n map(int,input().split()) map int input().split() ().split () input split k print(("NO","YES")[(n+1)//2>=k]) print ("NO","YES")[(n+1)//2>=k] ("NO","YES") "NO" "YES" (n+1)//2>=k (n+1)//2 n+1 n 1 2 k k=map(int,input().split()) map(int,input().split()) k n,k=map(int,input().split()) map(int,input().split()) n
n,k=map(int,input().split())
print(("NO","YES")[(n+1)//2>=k])