#include <cstdio>

#define FOR(i, l, r) for(int i = (l)    ; i <  (r); i++)
#define REV(i, l, r) for(int i = (r) - 1; i >= (l); i--)
#define INC0(i, n) FOR(i, 0, n)
#define INC1(i, n) FOR(i, 1, (n) + 1)
#define DEC0(i, n) REV(i, 0, n)
#define DEC1(i, n) REV(i, 1, (n) + 1)

typedef long long   signed int LL;
typedef long long unsigned int LU;


int x, n, a[100];

LL mod = 1000003, ex[31];

int main() {
	scanf("%d%d", &x, &n);
	INC0(i, n) { scanf("%d", &a[i]); }
	
	ex[0] = x;
	INC0(i, 30) { ex[i + 1] = (ex[i] * ex[i] % mod); }
	
	LL ans = 0;
	INC0(i, n) {
		LL e = 1;
		INC0(j, 31) {
			if(a[i] & (1 << j)) { (e *= ex[j]) %= mod; }
		}
		(ans += e) %= mod;
	}
	
	printf("%lld\n", ans);
	
	return 0;
}