import sys
input=lambda:sys.stdin.readline().rstrip()
def p(a,p,mod):
    rem=p%(mod-1)
    temp=a
    ans=1
    while rem:
        if rem%2:
            ans=(ans*temp)%mod
        temp=(temp**2)%mod
        rem//=2
    return ans
mod=1000003
x,N=map(int,input().split())
a=list(map(int,input().split()))
print(sum([p(x,i,mod) for i in a])%mod)