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