#!/usr/bin/env python3
# %%
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines


# %%
import numpy as np


# %%
N, M = map(int, read().split())
N, M

# %%
MOD = 10 ** 9


# %%
def fft_convolve(f, g, MOD=MOD):
    """
    数列 (多項式) f, g の畳み込みの計算．上下 15 bitずつ分けて計算することで，
    30 bit以下の整数，長さ 250000 程度の数列での計算が正確に行える．
    """
    fft = np.fft.rfft
    ifft = np.fft.irfft
    Lf = len(f)
    Lg = len(g)
    L = Lf + Lg - 1
    fft_len = 1 << L.bit_length()
    fl = f & (1 << 15) - 1
    fh = f >> 15
    gl = g & (1 << 15) - 1
    gh = g >> 15

    def conv(f, g):
        return ifft(fft(f, fft_len) * fft(g, fft_len))[:L]
    x = conv(fl, gl) % MOD
    y = conv(fl + fh, gl + gh) % MOD
    z = conv(fh, gh) % MOD
    a, b, c = map(lambda x: (x + .5).astype(np.int64), [x, y, z])
    return (a + ((b - a - c) << 15) + (c << 30)) % MOD


# %%
def make_comb(n):
    if n == 0:
        return np.int64([1])
    P = make_comb(n // 2)
    P = fft_convolve(P, P)
    if n & 1:
        P = np.convolve(P, np.int64([1, 1]))
    return P


# %%
answer = make_comb(M)[(N // 1000) % M]
print(answer)