x, n = [ int(v) for v in input().split(" ") ]
nlist = [ int(v) for v in input().split(" ") ]
maxn = max(nlist)
bignum = 1000003

def powermod(x,n):
    powerlist = [1] * (n+1)
    for i in range(n):
        powerlist[i+1] = x * powerlist[i]
        powerlist[i+1] %= bignum
    return(powerlist)


plist = powermod(x,maxn)
anslist = [ plist[nlist[i]] for i in range(n) ]

print(sum(anslist))