#include <stdio.h>

int main(void) {
	long long int x, n;
	long long int a[101];
	long long int i, j;
	long long int total = 0;
	long long int subtotal, an;
	
	scanf("%lld%lld", &x, &n);
	for(i = 1;i <= n;i++){
		scanf("%lld", &a[i]);
	}
	for(i = 1;i <= n;i++){
		subtotal= 1;
		an = x;
		while(a[i] != 0){
			//printf("a[%lld] = %lld %lld\n", i, a[i], an);
			if(a[i] % 2 == 1){
				subtotal = (subtotal * an) % 1000003;
			}
		//for(j = 0;j < a[i];j++){
			an = (an * an) % 1000003;
			a[i] /= 2;
		}
		//printf("subtotal = %lld\n", subtotal);
		total = (total + subtotal) % 1000003;
	}
	//printf("total = %lld\n", total % 1000003);
	printf("%lld\n", total);
	
	return 0;
}