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