import sys

def input(): return sys.stdin.readline().strip()
def list2d(a, b, c): return [[c for j in range(b)] for i in range(a)]
def list3d(a, b, c, d): return [[[d for k in range(c)] for j in range(b)] for i in range(a)]
def list4d(a, b, c, d, e): return [[[[e for l in range(d)] for k in range(c)] for j in range(b)] for i in range(a)]
def ceil(x, y=1): return int(-(-x // y))
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)]
def Yes(): print('Yes')
def No(): print('No')
def YES(): print('YES')
def NO(): print('NO')
sys.setrecursionlimit(10**9)
INF = 10**19
MOD = 10**9 + 7
EPS = 10**-10

def nCr(n, r):
    """ 事前テーブルなし組み合わせ簡易版 """
    from math import factorial

    if n < r: return 0
    # 10C7 = 10C3
    r = min(r, n-r)
    return factorial(n) // (factorial(r) * factorial(n-r))

N = INT()
M = INT()
MOD = 10**9

N //= 1000
rest = N % M

ans = nCr(M, rest) % MOD
print(ans)