from fractions import gcd
from heapq import*
import math
from collections import defaultdict, Counter
import sys
sys.setrecursionlimit(10 ** 7)
MOD = 10 ** 9 + 7


def main():
    x, n = map(int, input().split())
    a = list(map(int, input().split()))

    def modpow(a, n, mod):
        res = 1
        while n > 0:
            if n & 1:
                res = res * a % mod
            a = a * a % mod
            n >>= 1
        return res

    ans = 0
    for i in range(n):
        #print(modpow(x, a[i], 1000003))
        ans += modpow(x, a[i], 1000003)
    print(ans % 1000003)


if __name__ == '__main__':
    main()