import sys
for line in sys.stdin:
a = line.split()
a = [int(x) for x in a]
n=a[0]
k=a[1]
if k <= (n-1):
print('YES')
else:
print('NO')

import sys
for line in sys.stdin:
a = line.split()
a = [int(x) for x in a]
n=a[0]
k=a[1]
if k <= (n-1):
print('YES')
else:
print('NO')