n,m=map(int,input().split())
if n//m%2==0:
print('NO')
else:
print('YES')1684A - Digit Minimization | 43B - Letter |
1017A - The Rank | 1698B - Rising Sand |
235A - LCM Challenge | 1075B - Taxi drivers and Lyft |
1562A - The Miracle and the Sleeper | 1216A - Prefixes |
1490C - Sum of Cubes | 868A - Bark to Unlock |
873B - Balanced Substring | 1401D - Maximum Distributed Tree |
1716C - Robot in a Hallway | 1688B - Patchouli's Magical Talisman |
99A - Help Far Away Kingdom | 622B - The Time |
1688C - Manipulating History | 1169D - Good Triple |
1675B - Make It Increasing | 588A - Duff and Meat |
1541B - Pleasant Pairs | 1626B - Minor Reduction |
1680A - Minimums and Maximums | 1713A - Traveling Salesman Problem |
1713B - Optimal Reduction | 1710A - Color the Picture |
1686B - Odd Subarrays | 251A - Points on Line |
427C - Checkposts | 1159A - A pile of stones |